Finnian (フィニアン, Finian), often called "Finny" or "Finni," is the gardener of the Phantomhive household.
Finnian is a young boy with large, turquoise eyes and pale skin. He has short, messy, strawberry-blond hair clipped back with five red bobby pins — two on his right and three on his left.
Finnian usually wears a plain top with red piping around the collar and plaid pants along with black knee-high boots. He also sometimes sports a straw hat — he adores the hat because it was given to him by his young master, Ciel Phantomhive — around his neck to conceal a mark reading "S-012," which had been imprinted on him during his time as a test subject.
Like the other Phantomhive servants, Finnian has a great deal of respect and considerable fear for Sebastian Michaelis. He is also exceedingly loyal to Ciel Phantomhive, whom he views as his savior. Finnian is naïve and tends to burst into tears whenever he has done something disobedient or witnessed something immoral. According to Sebastian, he is an idiot with a bad memory. He is exceptionally strong to the point of being able to lift a marble pillar with ease, and he has to be very careful when doing work that utilizes his strength, for he might unintentionally break or damage something. Due to his past of constant imprisonment indoors as a test subject, he consequently loves being outdoors while working at the Phantomhive Manor and enjoys his work very much.
Little is known about Finnian's past. He was "picked up" by Ciel and admitted to the Phantomhive household as the gardener.  At first, his fear stopped him from going outside because it was hard for him to touch things without breaking them. Yet this fear gradually disappeared, and eventually he enjoyed being outdoors.
Before becoming a servant for the Phantomhive family, Finnian was held in captivity, forced to watch his friends get killed and kept indoors while frequently receiving numerous injections of an unknown substance. His captors are responsible for the tattoo on the back of his neck and the injections, which are probably the reason for his superhuman strength. It is also revealed that he was not the only person that has been experimented on. While Finnian and the others were being held captive as experimental subjects, a sudden raid was conducted on this certain institution. The conductors decided to destroy all the files and the "results" pertaining to institution's seemingly illegal activities. In order to stay alive, Finnian killed the doctor who killed his fellow inmates and who was also about to kill him. He escaped the facility and was found by Ciel and Sebastian.
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Black Butler Arc
Finnian and the servants are all outside the mansion after lunch; impressed with Sebastian as he effortlessly defeats a martial arts master. Sebastian asks him if he has finished weeding the garden. Since he has not yet done it, Sebastian orders him to get to work. Once they have gathered, Baldroy suggests that since a guest is coming, they will have a chance to get ahead of Sebastian. Mey-Rin and Finnian agree to his plan.
However, he uses extra strength weed killer on the garden, and everything is ruined. Nevertheless, Sebastian orders them to follow his instructions exactly, and everything will be fixed. Working together with Baldroy, they are able to turn the ruined garden it into a zen-inspired Japanese garden. Sebastian says that they are able to fix any problem because they are Phantomhive servants. He orders them to remain vigilant until their guest leaves.
Finnian is next seen watching Baldroy fix the meat as per Sebastian's instructions. Once everything is prepared, Sebastian asks them all to remain calm at dinner tonight. He is watching behind the door when Mey-Rin spills the wine on the tablecloth and watches dumbfounded when Sebastian removes the tablecloth. Along with Baldroy, they quickly escort Mey-Rin away.
Elizabeth arrives at the mansion and makes everything "cute." Tanaka is turned into "Antoinette." When she does the same to Sebastian, Baldroy, Mey-Rin, and Finnian laugh. However, they are immediately silenced with one look from Sebastian. She wants to hold a dance party with even more extravagant costumes. Ciel agrees and everyone participates.
However, when Lizzy takes his ring, Ciel yells at her to give it back. Everyone is surprised at his tone. Once she breaks the ring, they are even more surprised to see him throw the shards out the window. Ciel announces that ring or no ring he is still the head of the Phantomhive household. When Sebastian starts to play the violin, Ciel dances with Lizzy. Baldroy, Mey-Rin, and Finnian are surprised that Sebastian can play the violin. Finnian dances with Tanaka; while Mey-Rin only has eyes for Sebastian and wants to dance with him, but Baldroy laughs quietly knowing that will not happen.
All of them (Baldroy, Finnian, Mey-Rin, and Tanaka) are working together to catch mice in the manor. Finnian throws a statue at the mouse. A shocked Baldroy asks if he was trying to kill them instead. Ciel walks through the hall towards his study and gets annoyed by their antics; hoping to find some peace and quiet. Sebastian immediately catches the mouse and tells them to stop playing around and get back to work.
After the gun men's attack, Finnian and Baldroy come running to see what happened. Sebastian hands Baldroy the pie and tells them all to clean up. Before Baldroy can ask if "clean up" also includes the pie, Sebastian disappears.
The three of them are agonizing over whether or not they can eat it. Seeing his grumpy mood, Mey-Rin offers Baldroy some milk, but he says he does not want any. In the end, Baldroy decides to eat it. He tells Mey-Rin to get tea, and Finnian to get the silverware. However, Finnian notices that all the silverware is missing.
When Ciel returns, they rush out to greet him. They are worried that he is hurt, but Ciel assures them that he is not. They laugh then; claiming he must be having fun being so held up so high (Sebastian is carrying him in his arms). Later on, they are seen reading the paper about how the Italian family merchants have been wiped out. They wonder who could have been so powerful to do such action. Sebastian immediately orders them to get back to work.
Red Butler ArcSeveral months after the Jack the Ripper incident, Francis Midford and Elizabeth Midford pay a visit to the Phantomhive Manor. As Finnian wanders around the garden after mowing the lawn, he notices that the roses of the Christmas season have already bloomed.  Upon seeing this, he immediately reminds the rest of the servants about the special day.  While Francis, Elizabeth, Ciel, and Sebastian go out to the forest; Baldroy, Mey-Rin, and Finnian prepare a surprise birthday party for Ciel, which include baking their own cake and using flowers that they took from the garden to decorate the manor. They manage to prepare something for him although Ciel is shocked to see them in a horrible state. On his 13th birthday, Aunt Francis also asks the servants, no matter how awkward they are, to continue to take care of Ciel and Elizabeth. Within a short time, Finnian tells Ciel it's snowing; completing Ciel's birthday.
Indian Butler Arc
Baldroy, Finnian, Mey-Rin, and Tanaka go to the London townhouse with Ciel and Sebastian. Ciel has to investigate the Anglo-Indian attacks, and Sebastian does not trust the three of them. He fears that they will burn the manor down without him available to watch over them.
When Agni and Soma Asman Kadar come to stay with Ciel, Agni is given the task of cooking dinner, much to Baldroy's initial dismay. Finnian goes to the kitchen because he smells something good, and Agni asks if he would like to help. Finnian initially says that Sebastian would not allow him to because he is too strong, but Agni gives him the task of mashing potatoes something that plays to his strength. Eager to be allowed to help, Finnian completes the task easily.
When Ciel decides that Sebastian will represent his company at the Curry Fair, Baldroy, Mey-Rin, and Finnian aid Soma in taste-testing curries. They are also seen at the competition, presumably as a treat from Ciel, and praise Sebastian for his win afterward.
The following day, when they learn that the Scotland Yard will be paying them a visit, Sebastian orders Finnian to brush the snow from the trees to make the yard look better. When he can't easily get the snow off the top of the tree, he hits it and accidentally knocks it down. Agni, who is quite tall, raises Finnian on his shoulders and teaches him to be nice to all living things, including plants.
When the first-string circus members (excluding Snake, Joker, and Doll) attack the Phantomhive Manor, Baldroy, Finnian, and Mey-Rin take on the offensive after Jumbo's assault on Finnian. Jumbo runs into a just-awoken Finnian, who tells him to come back later. Jumbo hits him in the head and leaves, thinking that he has killed him. However, Finnian stands up and smashes Jumbo into the wall. Jumbo is left alive long enough to yell to Peter and Wendy to escape, but Finnian smashes his head for the second time, killing him.
Peter and Wendy then attack Finnian using whip-like weapons. They made a hole in his hat, and he throws heavy items at them in return. He yells at them that they shouldn't have damaged the hat that Ciel gave them. He loves this place, and he will do anything to protect it. The two of them then decide to string a wire between them and slice Finnian in half. Before they can do so, an unseen sniper (who is revealed to be Mey-Rin), shoots and kills Wendy with a single bullet to the head. Peter then abandons pursuing Finnian to take out Mey-Rin.
Inside the manor, Finnian goes to Baldroy's aid and lifts heavy statues to throw at Beast and Dagger. They flee, and they eventually end up in the basement. Baldroy takes out Dagger with a machine gun, which also shoots a lot of flour into the air in the process. Finnian goes to help Baldroy again, creating a hole in the wall, and he helps Baldroy out of the kitchen. He then watches as Baldroy throws a lit match into the kitchen, creating a massive explosion that kills Beast.
Later, when Ciel and Sebastian return to the manor, Mey-Rin, Finnian, and Baldroy are reprimanded for destroying much of the mansion in eliminating the first-string circus members. They are set to work cleaning up the mess. When Nina Hopkins arrives, Baldroy and Finnian go to greet her, but are blatantly ignored, much to Baldroy's annoyance.
Phantomhive Manor Murders Arc
Charles Phipps and Charles Grey arrive at the Phantomhive Manor to deliver a message. On the way out, they pass by Finnian. Phipps comments that "this side is still too easy" and appears to attack Finnian. However, it is shown that he merely wanted to fix Finnian's hat, which he did by sewing a flower over the hole. This surprises Grey; it leaves him wondering if Phipps always carries a needle while Finnian waves goodbye and profusely thanks Phipps.
Later, Ciel throws a party, as a result of the Charles' visit, and Finnian is partially responsible for the preparations for and cleaning up of the party, along with the other servants.
When Georg von Siemens is found dead, Finnian helps Baldroy move the body to the cellar.  When asked for their alibis, the servants say that they were cleaning together. When Ciel is accused of being the murderer, Finnian tries to defend his master, but Ciel tells him to stop.  While sleeping after the party, Sebastian wakes Finnian up. He then tells Finnian to care for the fireplaces first thing in the morning. Finnian is the first to find Sebastian dead the next morning. He and Mey-Rin try to console Ciel although he is also crying; Finnian even gives Ciel his coat. When the other guests begin discussing how Sebastian was killed, he yells at them to stop saying such insensitive things in front of Ciel. Tanaka, whom Ciel appoints as his new temporary butler, gives the servants their jobs and sends them on their way.
The following morning when Patrick Phelps is missing, everyone tries to get into the room he was staying in, but it is locked. Finnian is about to break the door down, but Charles Grey beats him to it. Later, Arthur tries to put the three deaths in order. The servants state that Sebastian talked to them all the night of his murder, and this proves he was the last to be killed.
Ciel is asked to lead a group to see if Sebastian had the key to Ciel's room, but he asks Finnian and Baldroy to guide them to the bottom floor. Finnian becomes distressed when Arthur Conan Doyle and Ciel begin searching Sebastian's body in the cellar. He then yells at Arthur, but is reprimanded by Ciel. The group then goes to search Sebastian's bedroom. They search through the entire room, but cannot find the key.
The key is still not found after all the luggage is checked, and Lau comments that Sebastian might have thrown it out the window. Finnian volunteers to search for it outside, and Mey-Rin decides to do the same. Ciel tries to stop them, but he exclaims that he wants to solve the case and runs outside with Mey-Rin. Baldroy follows them to try to get them back inside, but they refuse. Finnian reminds them that everything they have is because of Sebastian and Ciel and begins to cry. Baldroy reminds them of their job to protect the manor and Ciel. Tanaka then offers them an umbrella and tells them that they do not have enough food. They all go to the kitchen and begin planning how to deal with the lack of food. Upon the discovery of Jeremy Rathbone, the servants capture and tie him up. They bring him to Ciel while Finnian searches Jeremy's pocket for a ticket which proves Jeremy's innocence. When Jeremy is freed, he asks that the bodies should be placed in separate rooms, which the servants were left to do. Finnian says he thinks they can trust Jeremy, but Baldroy and Mey-Rin tell him that trusting people too much will only get him hurt.
Later, the servants are trying to figure out what to serve for dinner since they are out of provisions. Jeremy comes in, and he helps them prepare dinner out of the few ingredients and herbs they have. After supper, the servants watch as everyone compliments the food.
When everyone is waiting to see who Patrick's killer was, the servants all stand around Ciel with makeshift weapons to protect him. After Jeremy reveals who the killer is, Finnian brings up Irene Diaz's mysterious "dark red liquid." Mey-Rin and Grimsby Keane yell at him, but Jeremy explains anyway. His explanation leaves the servants exasperated.
At Sebastian's funeral, Finnian is one of the people who carries his coffin. After being buried, Finnian notices that the bell in Sebastian's grave is ringing even though there is no wind. He then begins digging Sebastian's grave, and the others follow him. When Sebastian is completely unearthed, and they find that he is still alive, the crying servants and Elizabeth jump on and hug him.
Luxury Liner Arc
Sebastian informs the servants that there will be a new servant. Snake's snakes then enter the room and cause Baldroy to hide behind Finnian. Finnian allows one to crawl around him and calls it "friendly." Snake begins naming all of his snakes, while Finnian begins talking to the snake crawling on him. Later, he is showing Snake around when Elizabeth shows up.
A month after the unprecedented accident of the ship Campania, Elizabeth and her brother Edward, celebrate Easter in the Phantomhive Manor. Elizabeth decides to do a traditional game of egg hunting. Upon Charles Grey and Charles Phipps' arrival, Sebastian applies small changes on the egg hunt's mechanics by adding a few deviations from the game of egg tapping. This leads to Finny being paired up Snake .
Finny starts looking for eggs with Snake's (and his snakes) guidance, at one point leaving his partner behind. He then comes back with a bunch of eggs and a 'burned up' because one of the eggs blew up in his face. Yet, he finds Snake dizzy and lying on the ground with his snakes, and all of their eggs are already broken. This then disqualifies them from the game.
Public School Arc
Ciel enters Weston College and eventually, gets to participate in the prestigious dormitory Cricket Tournament. Finny, together with Baldroy, Mey-Rin, Tanaka and Elizabeth watch Sapphire Owl's game against Scarlet Fox . Finny asks Bard why members of the Blue House get out so fast. Bard explains the situation and the game's mechanics and rules, which makes Finny conclude that the game is going to be a complete disaster. Bard mentions he made a special meat pie for lunch. However Finny and Mey-Rin find it so troubling because it might lead to Elizabeth getting poisoned. They fear the Edward would conclude that their master is scheming against the Midfords. When lunch comes, the pie Bard made mysteriously disappears which relieves Finny's and Mey-Rin worries.
Finnian, Mey-Rin, Baldroy and Tanaka later witness the birth of the second "Miracle of the Sapphires" as Blue House wins the tournament. They are also seen at the boat parade and celebrating the victory afterwards.
They all welcome Ciel and Sebastian back home after the pair returns from boarding school. Baldroy explains that Old Man Sam's fence broke and all the sheep escaped. Mey-Rin tells one of the sheep not to eat her dress. Finnian and Snake chase after the sheep as well. Ciel suddenly laughs and tells Sebastian to handle the situation.
Sebastian in the morning supervises the entire household's chores. Then Snake, Baldroy, Mey-Rin, and Finnian accompany Ciel and Sebastian to London. Mey-Rin and Finnian marvel at a large clock. Baldroy explains that it's Big Ben. Ciel takes all of them with him as he goes through different stores. Finnian wants a straw hat as cool as Big Ben; Sebastian pats his heat and tells the haberdasher to just give him a normal one. Finally, they are at a store where the latest Funtom perfume is being sold. Suddenly, a scream shatters the air, and Sebastian leaves Ciel in Baldroy's care. Later, a crowd of people rushes to buy the perfume, surprising everyone.
Emerald Witch Arc
All five members of the household accompany Ciel and Sebastian to Germany. Standing in the village square, Baldroy complains that his butt hurts since they've been sitting for so long. Shocked, Mey-Rin replies that he's being indecent. Snake hears Finnian speaking German, and he questions him about it. Finnian replies the he can speak a little. Sebastian instructs them to load the luggage in the second carriage. Then they all proceed into the werewolf forest.
The group suddenly sees a village in the forest, and everyone disembarks from the carriages. Baldroy and Finnian both call out to see if anyone's there.  They are all then unexpectedly surrounded by angry villages who are waving their pitchforks at the group. Finnian tries to reassure the villages that they are not "rats." Once the situation is resolved, they head with Sieglinde Sullivan to the Emerald Castle.
When they arrive at the manor, everyone is amazed at its magnificence. Finnian wants to touch some flowers that he's never seen before, but Sieglinde immediately stops him, stating that the flowers are poisonous. Inside, Sieglinde tells Wolfram Gelzer to show the servants to their quarters. Later, although they all offer to help, Sebastian tells them to rest after their long journey.
During the night, Ciel and Sebastian attempt to investigate the forest clandestinely, but are poisoned by the miasma. When Ciel regains consciousness, Finnian is holding his hand, and Snake is by his bedside. Sebastian reaches his hand out to Ciel when Ciel unexpectedly knocks it away. Ciel then grabs hold of Finnian, surprising everyone. He says "Ciel doesn't want pain anymore"; this confuses everyone even more. When Sebastian tries again, Tanaka stops him. Ciel suddenly starts screaming about the lights being too dim. Everyone feels that his eyesight may have been affected by the attack as well.
In the morning, Sebastian greets all of the servants. After he tells everyone what to do, Sebastian sighs and tells Finnian to take care of Ciel. Finnian is about to happily agree; yet, he shrieks when he understands what Sebastian has asked him to do. Sebastian tells him to feed Ciel some food; if he doesn't have any appetite, he can give him some warm milk with honey.
Finnian continues to take care of Ciel. When Ciel refuses to eat, he offers him milk with honey. However, he blows too hard on the warm milk (at the speed of 50m/s). The milk splashes all over Ciel. Finnian immediately offers to clean him up. He even offers to take Ciel outside, but Ciel replies he's extremely afraid. Determined, Finnian responds that the day Ciel gave him a name, he decided to protect him. Ciel softly answers he's not worth protecting. Ciel starts crying; seeing his tears, Finnian also starts crying. Finnian then recalls his past. Presently, Finnian tells Ciel that he and Sebastian made him into who he is now. Ciel tells him he doesn't want Sebastian here, upsetting Finnian.
Later on, Sebastian brings Sieglinde to see Ciel. Finnian happily points out that she is speaking English now. Sebastian quietly tells him to clear the dishes and leave. Sieglinde proceeds to change Ciel's bandages.
Sieglinde then addresses the rest of the Phantomhive household. She tells them that Ciel's eyes are fine; the condition was mostly psychological. All of them are extremely relieved. Baldroy immediately suggest that they head back to the manor so Ciel can get some real rest. Mey-Rin states she knows he just wants to cook him some meat. Finnian wants to make snacks, and Snake wants to make scones-all for Ciel. Sebastian sighs and asks them not to increase the workload.
After Sebastian receives John Brown's letter, he heads to Ciel's room. There he asks Finnian to leave for a while. Although Finnian resists with all his strength, he is unable to stop Sebastian. After Sebastian throws him out of the room, Finnian is shocked that Sebastian didn't even flinch under his full strength.
The servants are all reunited after Ciel recovers. Sebastian opens the door, and all of them tumble into the room. Sebastian remarks that they're really rude for listening at their master's door. Finnian tries to lunge on to Ciel, but Sebastian stops him. Ciel smiles and offers him his hand instead; crying with relief and happiness, Finnian takes it.
All of them, Sebastian included, line up by Ciel's bedside. Ciel speaks—because of his carelessness, they all suffered and worried. He asks them to forgive him. Although they are surprised, he adds determinedly that they will never see him in such a sorry state again. He finally asks that they continue to serve him. They all respond with "Yes, My Lord."
After a few minutes of the servants' light banter, Ciel also makes another request—he wants them to forget how he was until now. Mey-Rin deduces that Ciel also recalls his off-the-charts behavior.  Ciel adds that he didn't want to behave like that. Baldroy concludes that Ciel reacted the same way as soldiers. On the battlefield, when they are wounded for the first time, they panic.  Sebastian wonders if the attack's aim was purely psychological. When Ciel asks him to explain, Sebastian relates the news about the Queen's letter. He also had the components of the antidote analyzed. When Ciel reads the Queen's letter, everything starts to fall into place. However, he's incredibly annoyed with the Queen's final request—she wants the "little green witch to come to tea."
Ciel knows this request won't be easy to accomplish. Sebastian adds that even the Queen's selfishness is incomparable to Ciel's. Finally, Ciel tells the entire household to make preparations to leave—further instructions will come later.
The entire Phantomhive household is hiding and waiting in the forest. Mey-Rin whispers that it's starting to get noisy. A flare suddenly lights up the night sky. Baldroy yells it's about time. He adds their boss is calling them, and they all head out.
In the forest, the household is trying to find Ciel. Snake states Goethe smells Smile over there. Mey-Rin takes off her glasses, confirming that it is Ciel. When they reach him, he states their retreat plan starts now. They'll split into two groups and escape. Snake tells Baldroy he can feel them coming. Baldroy asks how he can tell—Snake responds through Arthur that his snakes can feel vibrations with their skin.
At this point, Finnian, Tanaka, and Mey-Rin split up from the others. Finnian rapidly runs while carrying Sieglinde. Remembering the day Ciel and Sebastian explained his new name to him, he switches to lightning speed. Although the "villagers" keep firing at them, Finnian escapes by jumping off the cliff. Nonetheless, they reach the edge of the cliff and keep firing. Suddenly Mey-Rin takes out them one at a time, and the rest retreat. She suddenly notices movement; a female officer, Grethe Hilbert, appears in front of Finnian, claiming men are useless. Mey-Rin yells at Finnian to run. When Grethe fires, Tanaka suddenly appears and uses his sword to cut through the bullets. He tells Finnian to go on ahead; as the Phantomhive servants, they will carry out any order their master gives them.
In the underground room, Diedrich orders Baldroy and Snake to put coal in the furnace of the train. Finnian, carrying Sieglinde and "small" Tanaka, also arrives alongside Mey-Rin. Snake receives Keats, who showed the group the way. Baldroy tells Snake and Mey-Rin to check the oil; he also tells Finnian to open the gate. 
Once the train starts, Baldroy tells Finnian to get on. Suddenly, Wolfram arrives. The group panics when they think that he's going to attack them. However, he shoots a soldier who was going to attack Sieglinde. At the same time, Wolfram is shot by the female German officer, who yells that he betrayed them. She next aims for the group. Before she can kill them, Sebastian and Ciel arrive just in time to save them. Plunging his knife into her throat, Sebastian states some food escaped from the oven.
The entire group then arrives at Diedrich's castle; Finnian is carrying Wolfram. Baldroy, Finnian, and Mey-Rin comment on how big the house is. However, Heinrich says this castle, Weizsäcker, is small compared to the other castles. Ciel looks at Diedrich and comments that he's a rich boy. The wounded are all treated; Mey-Rin and Tanaka offer to help since they are not injured.
Wolfram and Sieglinde are disguised on their journey to England. Before Ciel leaves, Diedrich tells him to be careful. When the group arrives in London, Sebastian asks Wolfram to refrain from speaking in German because it will draw unwanted attention. The servants leave Sebastian, Ciel, Wolfram, and Sieglinde and proceed to the mansion. When the group returns, the servants all greet them. The entire day passes in light fun along with Agni, Soma, and Elizabeth.
Blue Cult Arc
At Phantomhive Manor, Sebastian Michaelis gathers Finnian, Baldroy, Mey-Rin, Snake, and Tanaka, and gives each of them instructions, save Tanaka, who is told to remain as is, for the upcoming Halloween celebration. Baldroy, Mey-Rin, and Tanaka share details on the American, Chinese, and Japanese Halloween traditions, respectively, which inspires Sebastian.
On Halloween, Finnian and the other servants, dressed in costumes, greet Ciel Phantomhive, when the latter arrives. Finnian, then, mingles with the tenants of Phantomhive land, whom the celebration, which features a combination of various Halloweens from around the world, is primarily dedicated to. Later, Finnian and the others set lanterns afloat into a river to end the night.
Black Butler Arc
Note: This is the anime's adaptation of the Black Butler Arc.
The entire household is present when Ciel sits down for breakfast. Ciel throws a dart at his head, making him bleed. Holding his head he asks Ciel why he did that. Ciel replies that he doesn't need to justify his actions. In the manga they are all outside the mansion after lunch, impressed with Sebastian as he effortlessly defeats a martial arts master. Sebastian asks him if he's finished weeding the garden. Since he hasn't Sebastian orders him to get to work. Once they are all together Baldroy suggests that since a guest is coming, they have a chance to get ahead of Sebastian. Mey-Rin and Finnian agree to his plan.
However, he uses extra strength weed killer on the garden, and everything is ruined. Nevertheless, Sebastian orders them to follow his instructions exactly, and everything will be fixed. Working together with Baldroy, they are able to turn it into a Japanese style garden. Sebastian says that they are able to fix any problem because they are Phantomhive servants. He orders them to remain vigilant until their guest leaves.
Finnian is next seen watching Baldroy fix the meat as per Sebastian's instructions. Once everything is prepared, Sebastian asks them all to remain calm at dinner tonight. He is present watching behind the door when Mey-Rin spills the wine on the tablecloth and watches dumbfounded when Sebastian removes the tablecloth. Along with Baldroy, they quickly escort Mey-Rin away.
He and Baldroy later on move a family portrait which Ciel had asked Sebastian to remove. Baldroy tells him to hurry up, or Sebastian will yell at them. Later, they are bringing the portrait though the room when they see Mr. Damian is injured on the stairs. All three of them are surprised when he runs away from them. Outside Baldroy tells Finnian that he heard something, but Finnian responds that he didn't hear anything. After working so well, Sebastian rewards Baldroy and Finnian with a special dessert and tells Baldroy that an oven repair man will be coming in the morning.
All of them (Baldroy, Finnian, Mey-Rin, and Tanaka) are working together to catch mice in the manor. Finnian throws a statue at the mice. A shocked Baldroy asks if he was trying to kill them instead. Ciel walks through the hall towards his study annoyed by their antics, hoping to find some peace and quiet. Sebastian immediately catches the mice and tells them to stop playing around and get back to work.
After the gunmen's attack, Finnian and Baldroy come running to see what happened. Sebastian hands Baldroy the pie and tells them all to clean up. Before Baldroy can ask if "clean up" also includes the pie, Sebastian disappears.
The three of them are agonizing over whether or not they can eat it. Seeing his grumpy mood, Mey-Rin offers Baldroy some milk, but he says he doesn't want any. At last, Baldroy decides to eat it. He tells Mey-Rin to get tea, and Finnian to get the silverware. However, Finnian notices that all the silverware is missing (Sebastian has taken it).
When Ciel returns, they rush out to greet him. They are worried that he's hurt, but Ciel assures them that he isn't. They laugh then, claiming he must be having fun being so high up. (Sebastian is carrying him in his arms).
One day, Grell drops tea on Finnian. Mey-Rin and Baldroy watch as he hops around in pain. They ask Ciel why he took in such a useless idiot; he replies that he had hoped that Sebastian would have been the only one who would be inconvenienced when he agreed with Madame Red to train Grell into becoming a proper butler. Grell wants to kill himself to repent; the servants wonder when he got a knife. Sebastian asks him to stop—if he bleeds all over the floor, it will be trouble for him to clean it up. Grell claims that he's so nice. Baldroy asks Mey-Rin and Finnian if this was "nice"; they shake their heads no.
When Grell is talking to the servants in the garden, the "real Tanaka" appears. It's been three months since they last saw him. He tells Grell that the mansion was rebuilt exactly two years ago after Ciel's parents died in the fire that burned it down. After repeating the story, Tanaka falls into a slumber. Baldroy tells a shocked Grell that this happens every time he exerts himself. Suddenly, everyone notices that Grell has trimmed all the bushes in the garden into skulls. Grell offers once more to kill himself, but the three of them stop him.
Elizabeth arrives at the mansion and makes everything "cute." Tanaka is turned into "Antoinette." When she does the same to Sebastian, Baldroy, Mey-Rin, and Finnian laugh. However, they are immediately silenced with one look from Sebastian. She wants to hold a dance party with even more extravagant costumes. Ciel agrees and everyone participates. Seeing himself in a plain dress, Grell wants to kill himself once again. This time, Baldroy and Finnian don't stop him, so he doesn't continue with this charade. Mey-Rin helps Elizabeth get ready. 
However, when Lizzy takes his ring, Ciel yells at her to give it back. Everyone is surprised at his tone. Once she breaks the ring, they are even more surprised to see him throw the shards out the window. Ciel announces that ring or no ring he is still the head of the Phantomhive household. When Sebastian starts to play the violin, Ciel dances with Lizzy. Baldroy, Mey-Rin, and Finnian are surprised that Sebastian can play the violin. Finnian dances with Tanaka; Mey-Rin only has eyes for Sebastian and wants to dance with him, but Baldroy laughs quietly knowing that won't happen.
Grell promises that he'll get Elizabeth home safely. Baldroy asks if he'll be all right; he answers that he's one hell of a butler. When he leaves, Mey-Rin comments that he's the type that lives forever.
Red Butler Arc
Note: This is the anime's adaptation of the Red Butler Arc.
All four to them are sitting outside the manor on the steps after Ciel's aunt's death. They wonder if he will be all right. Mey-Rin comments softly that the funeral must be happening about now. Finnian is depressed and feeling lonely because Madame Red will never visit again. Baldroy yells that they have to support Ciel now. Tanaka speaks aloud (in his real form) that Angelina Dalles has departed, gone to the place of her beloved. 
Note: This is an anime exclusive arc.As a treat from Ciel, the servants go with Sebastian and Ciel to the village of Houndsworth. There, they uncover the mystery of the Demon Hound, which initially appears to be manufactured by Henry Barrymore. He used it as a cruel method to maintain control over the village, much to Finnian's distress. When Finnian intervenes in the brutal attack on James's dog, the villagers, unaware of Henry's deceit, turn on the Phantomhive household. However, Sebastian comes to their aid, and Ciel and Sebastian explain to the villagers how Henry carried out his plan. With this knowledge, the villagers jail Henry, but he is later taken from his cell and killed.
The following day, with the knowledge that there is a real threat out there, Finnian searches for Angela, (who has gone outside), worried that she may be in danger. Baldroy, Tanaka, and Mey-Rin accompany him, and they encounter a strange, nude man. The villagers then approach them and explain that they intend to seek the real Demon Hound's forgiveness.When the Phantomhive servants turn their attention back to the nude man, they find a large dog in his place. In the dog's claws is a bit of Angela's clothing, which prompts Finnian to chase after him. He attempts to take him on, but ultimately, Sebastian intervenes to tame the dog. They then find that the real dog is Pluto, and he is Angela's pet. Upon her request, they take him home with them.
When they return to the manor, Ciel has recovered Talbot's famous camera. Tanaka explains that the camera has the ability to show the most valued treasure of the one in the photograph. Furthermore, that thing/person is not of this world (ie. deceased). Testing it proves Finnian's favorite item was a bird that he had years ago. It was crushed by his strength the second he tried to pet it. Ciel orders the three of them to find out Sebastian's most important person/thing. Although they try various techniques, Sebastian is too smart for them. Lau joins in as well, but their luck does not change.
After many attempts, Ciel is ultimately forced to put himself in harm's way. He uses Finnian to throw a statue at him much to Finnian's discomfort. When Sebastian comes to Ciel's aid, Baldroy is able to get a photo. The three of them then go to develop it. However, before it develops, Pluto enters the room and sets them on fire, destroying the photo. The servants later see the photo Sebastian took of Ciel, which reveals that Ciel cares the most for Sebastian. This confuses Finnian, as the photo is only supposed to transfer images of beings not of this world, and thus, he does not understand how Sebastian ended up in the photo.
Indian Butler Arc
Note: This is the anime's adaptation of the Indian Butler Arc. Please look above for more details or at summaries of episodes 13-15.
Conspiracy and Revenge Arc
Note: This is an anime exclusive arc.
Ciel hears the servants acting up outside his study. Pluto is attacking Mey-Rin, and Finnian and Baldroy are trying to stop. Sebastian orders Pluto to stop and leave the mansion; he tells Mey-Rin that he was interested in something in her pocket. She takes it out; it's a candy made by Ciel's company. However, Tanaka suddenly appears and comments that it's a fake. Ciel then realizes something is seriously wrong.
After Ciel takes Lau down, the servants wonder what they can do to make Ciel feel better. They wonder what the mansion was like before they came. Elizabeth tells them it was always full of laughter and smiles. They decide that they must always be smiling for Ciel's sake. Suddenly the wind changes alerting all of them; Finnian carries Elizabeth, and they rush back to the main house. She asks them what's going on; Sebastian asks her to join Ciel. Mey-Rin tells her to smile when she's with him. She agrees, and Sebastian escorts her away telling the servants the rest is up to them.
When the intruders attack, all of them recall their traumatic pasts. Therefore, they will do anything and everything to protect this mansion. After they chase the enemy away, Tanaka thanks them for their hard work, and they smile back.
When Ash Landers takes control of Pluto from the Phantomhive Manor, forcing him to set fire to most of London, the servants attempt to stop him without killing him. However, Ciel views him as being too large a threat to leave alone, and he orders them to take him down. They agree, despite not wanting to kill someone they view as a member of their family.
They end up being successful, but are shown collapsed on the ground afterward. However, Sebastian comments that they were all still breathing but not all of Pluto's bones are in one place.
Note: This is an anime exclusive arc.
Sebastian informs all four of them that Ciel has lost his memories. Nevertheless, they continue to work for him like they always did. Finnian, Baldroy, and Mey-Rin accompany Ciel and Elizabeth to the countryside with Sebastian. Sebastian asks them to stay calm during the trip, but when they find out that Ciel and Elizabeth's engagement is in danger, they perform their usual antics that end up causing Sebastian trouble. However, he deals with everything swiftly.
Finally, when Lizzy is in danger because of the flood, Sebastian uses them to control the river by setting up embankments. They are relieved when Ciel recovers. Because of Sebastian's efforts, the "white deer" that Lizzy was looking for is revealed and everyone is overjoyed at the sight. Tanaka suddenly appears to explain its significance, surprising everyone even Sebastian.
The servants all help send Sebastian and Ciel off when they are travelling on the train.
He also comes along to the costume party hosted by Alois Trancy, dressed as a samurai warrior. Finny, along with the other Phantomhive servants, attempt to help the Trancy servants during the party. However, he messes up and drops a large crate of wine, drawing criticism from the rest of the group. He, along with Elizabeth, Soma, Agni, and the other two Phantomhive servants, are threatened with death if Ciel does not comply with Alois Trancy's demands. He is among the affected when Hannah begins to play her instrument, forcing him to cover his ears from the sound; however, he is not controlled, like most of the other guests. Luckily, Agni is able to hit a pressure point in his neck, allowing him to be unaffected from that point on, with the downside of having the sound of his voice off. Finny then proceeds to assist the rest by knocking out the other party guests. Sebastian later proceeds to save them by overlapping Hannah's playing with his own.
He is last seen in the final episode, where he is trying to persuade Ciel not to leave the manor along with the other Phantomhive servants. Ciel tells them that the mansion is theirs, and they can do what they want with it. He suggests that they burn it down, but they say they can never do something like that; it holds their precious memories of him. He laughs lightly and leaves them crying after him. As they are watching the carriage leave from atop a cliff, Tanaka comes to get them.
Kuroshitsuji: Book of Circus Arc
Note: This arc corresponds with Circus Arc.
Sebastian instructs the servants. Mey-Rin will wash the sheets, Finnian will work in the greenhouse, and Baldroy will make some bread dough. Tanaka, Sebastian says, can stay as he is. When the guests come, Sebastian tells them to stay quietly out of sight.
As Sebastian's preparing the table and floral arrangements, he hears Finnian's cries. Finnian tells Sebastian he used the stove's heat to try and make the roses bloom faster, but they were destroyed. Exasperated, Sebastian cleans up a little bit, and then tells Finnian to handle the rest.
When Jumbo breaks into the grounds, Finnian comes toward him half asleep. He asks Jumbo to come back later because he's not allowed to let people in when his master Ciel is away. He states he's under strict orders from Sebastian, and he doesn't want to make him angry. When Jumbo hits him, he thinks he's killed Finnian. However, Finnian knocks him down, once again telling him he can't let Jumbo go because he'll get in trouble. Once Jumbo is dead, he faces Peter and Wendy. Finnian yells that he will protect this mansion because Ciel doesn't lock him up or forces him to fight death matches with his friends. When Finnian is about to be decapitated with a wire, Mey-Rin kills Wendy.
He is next seen in the house facing Dagger and Beast. Dragging a statue in each hand, he states he's found the rats and throws the statues at them. Lastly, he breaks the wall of the kitchen so Baldroy can get out. He is seen standing with both of them when Baldroy tells Beast that they are Phantomhive servants—they will protect this mansion with their lives.
Kuroshitsuji: Book of Murder
Note: This is the anime's adaptation of the Phantomhive Manor Murders Arc. Please look above for more details.
- (To Agni, who tells him to handle the trees with care) "With care, huh? That isn't something I would have understood before coming here, but now it makes perfect sense!"
- (To Agni) "Before, I didn't get to go outside like this all the time, so now every day's a lot of fun! I can come in contact with trees and insects . . . and people too. But, at first, I was frightened. It's really hard for me to touch something without breaking it."
- "The young master doesn't give me injections every single day like those other people did. Young master doesn't make my friends and I kill each other. Nor does he keep me locked up. I love this place. And that's why I made up my mind. I'm going to protect this place."
- "If not for Mister Sebastian, we would never have been able to come here to the manor. I'd never have been able to go outside or . . . feel the rain on my skin like this. No home to return to. No friends. No freedom. Every last thing . . . was given to us by the young master and Mister Sebastian."
- (To Ciel Phantomhive) "I wouldn't be here if it wasn't for you! I couldn't do anything but destroy. But you taught me how to grow! You made me from #12 into Finnian."
- "Faster than a hare or a bullet. I'll run through this forest faster than anyone. Because I'm . . . Finnian!"
- According to the official Kuroshitsuji character popularity poll, Finnian is the tenth most popular character in the series, with 193 votes.
- When Ciel Phantomhive and Sebastian Michaelis first encountered Finnian, Finnian was bald. However, in the first season of the anime, Finnian was shown with hair.
- Sebastian is the one who has taught him how to read.
- When attempting to join the circus, Ciel uses Finnian's name as his cover, but Ciel states that his occupation is a former pageboy instead of a gardener.
- In the two times that the number on Finnian's neck are shown, they are different. Initially, it says "S-012," but the second time it is portrayed, it reads "S-12."
- He appears to be able to speak a little of German.
- Ciel Phantomhive is the one who gave Finnian his name. He based it off of Fenian Cycle, which is a composition of tales and ballads centering on the deeds of the legendary Finn MacCumhaill and his war band, the Fianna Éireann. It is part of a series on Celtic mythology.
- Finnian's favorite food is Omurice, because Sebastian always decorates it with a little flag. He also likes donuts and deep-fried food, especially deep-fried buns.
|Ciel Phantomhive · Vincent Phantomhive · Rachel Phantomhive · Sebastian Michaelis · Tanaka · Baldroy · Mey-Rin · Finnian · Pluto · Snake|