Finn

Finn (formerly Pen, from the pilot episode) or full title: Finn the Human Boy is the main protagonist of the series Adventure Time.

Background
As shown in "Memories of Boom Boom Mountain," Finn appears to have been abandoned during infancy and left alone in a woodland. He reveals that he made "boom boom" (reference to poop.) on a large leaf, fell on it, and lay crying there until Joshua and Margaret (the mother and father of Jake) rescued him from the wilderness to raise him along with Jake, who becomes like a brother to him (as such, Jermaine is also Finn's adoptive brother). In "Henchman," when Finn is asked about his parents, he says Jake told him that he came from a cabbage in jest. In "Susan Strong," Finn states that he doesn't know anything about his parents, family members, or even other humans.

Status as the last human
Finn may be the last normal human in the Land of Ooo, or possibly the world. In the episode "Her Parents," Lady Rainicorn's mom says she thought humans were extinct. This lends new significance to his title Finn the human, as his humanity may be unique in Ooo. Up to the episode "Susan Strong," Finn believes he has never met another human. Finn becomes depressed and "soul-searchy" when he thinks about it.

Finn encounters Susan Strong whose identity as a human or mutant is left ambiguous, even though the others in the Hyoomen Tribe were revealed to be mutants. Other characters that appear human-like (such as Penny or the Old Man Henchman) have been confirmed by the show's creators to be mutants or "humanoids".

Note that Fionna (the gender-swapped version of Finn) is also a human, but it's unknown whether the gender-swapped characters exist in the same universe, period of time, or reality as the main series, but the possibilities are endless.

Appearance and equipment
Finn is a 13 year old human. He has very thin, noodle-y limbs and wears a white hat with two "ears" sticking out on top, which he has proclaimed is "awesome." His hat covers his entire head, except for his face. He also wears a light blue short-sleeved shirt blue-jean shorts, a green backpack, rolled-down white socks, and a pair of black shoes. When he's in the Ice Kingdom, he occasionally wears a yellow sweater. He has several missing teeth because "he bites trees and rocks and stuff," according to Pendleton Ward, the creator of ''Adventure Time. He has also eaten a broom in the episode "Wizard" Ward has also stated that Finn has blonde hair which can be seen in "To Cut a Woman's Hair''," where Finn removed his hat (one of three times he has done so), and long golden locks of hair flowed out. His hair had a glowing sheen and extended his body length, until he cut it off and gave it to the Tree Witch. His hair subsequently has started to grow back, as shown in "Mortal Folly" and in "Heat Signature." He wears white briefs that made an appearance in "City of Thieves", when Penny stripped him at the end of the episode.

thumb|right|356px|Finn's Magical Hair

Although his eye's typically lack detail and appear as small black circles, their colour is shown in the episode "The Enchiridion!" when Finn is being tried by the Dark Magician. His left eye is blue while his right eye is green, characteristics of the genetic condition heterochromia. (But as stated by Andy on Formspring, "that was a special occasion. the hetero chromatic effect was a byproduct of him being hypnotized by that guardian dude." He also earlier stated that Finn's eyes were probably blue.)

Finn's favored weapon is a sword that he sometimes carries. Pendleton Ward has stated that his sword is made of gold. As of the episode "Mystery Train," Finn is shown using a new sword with a pink/silver blade and a red, twisted "root" handle. Finn's original golden sword was destroyed in a black hole during a previous episode.

Personality and character traits
Though at times violent and aggressive, Finn is a brave and righteous hero. He has a very strong sense of responsibility and gets upset when he is unable to help others. He is almost physically incapable of doing anything evil or unjust, and will struggle greatly against doing such thing, as seen in several episodes such as "City of Thieves," "The Eyes," and "The Enchiridion!" Even though he acts like a normal boy, Finn acts like a gentleman when it comes to ladies. Finn is shown to be a fearless thrill-seeker and enjoys putting himself in the midst of danger simply because he enjoys a challenge. However, as illustrated in "Ocean of Fear," Finn has an unexplained phobia of the ocean, or thalassophobia which may be explained in a future episode, despite the fact that he can effortlessly come into contact with any other body of water. While he portrays himself as a rough and tough hero, Finn has a tender side capable of love and compassion, as shown by his boyhood crush on Princess Bubblegum and his brotherly relationship with Jake. However, Finn seems to hate romance movies and kissing because in "Go With Me" he actually vomits during a kissing scene in a movie.

His aspirations to be a great hero make Finn somewhat of a moral sheriff to the Land of Ooo, as he is willing to help and protect any innocent creature in his strange world. Finn gets a lot of conflicting emotions when it's unclear whether something is good or evil, exemplified by his dealings with Marceline in the episode "Henchman."

Abilities
Finn is proficient in several forms of combat, including hand-to-hand combat, magic, and sword fighting. He can jump very high and is exceptionally strong and agile for a boy of his age; he is seen equally wrestling full-grown Marauders, the large grass ogre Donny, and a general variety of monsters and creatures several times his size. He otherwise seems to be quite strong and athletic, despite his age and appearance. He also can make his arms and legs bend in inhuman ways, like the Science Dance and "spaghetti limbs", when he waves his arms and legs (Jake can also do this).

Besides combat, Finn has displayed many other impressive abilities. He has some origami skills, as shown in "Ricardio the Heart Guy" in which he makes Princess Bubblegum a paper crane. Finn has been seen enjoying singing and gained the ability to auto-tune his voice on command after eating a tiny computer, although he can also sing without auto-tune. Apparently, Finn can play the flute, as seen in "Prisoners of Love", when he plays a little selection before throwing his flute at Ice King. He is very good at playing a video game called Adventure Masters, which he and Jake play on Beemo from time to time. Finn is also somewhat gifted at constructing simple machines, such as the catapult in "The Witch's Garden." He can also spit very long distances, as demonstrated in "Evicted!" when he spits on Marceline and in "My Two Favorite People" when Finn spits on Tiffany's face. In "Dungeon," one of the trials that Jake says Finn would have breezed through is a spitting competition against a goblin-like creature. Finn writes and draws with his left hand and occasionally with both hands at the same time. He additionally handles his sword with his right hand, suggesting he may be ambidextrous, able to use both hands with equal skill.

One-time abilities
Finn and Jake gained magical abilities in the episode "Wizard" but they have never used those abilities in any other episode. Pendleton Ward later revealed on his Formspring that all of the magic Finn and Jake gained in that episode was contained in their robes, which were destroyed.

Likewise in the episode "The Chamber of Frozen Blades" Finn and Jake gain ice ninja skills, but it's unlikely they will use them again because, according to Adam Muto, "[they] didn't have enough time to commit the incantations and hand positions to memory."

Relationships
Being a hero, Finn has become quite popular in the Land of Ooo, starting many friendly relationships.

Jake
As both housemates, and best friends, Finn and Jake share a very deep and strong bond. Having been raised together by Jake's parents, the duo have a relationship similar to that of siblings, with Jake acting as Finn's older brother. Though they have an unconditional love for each other, Finn can get frustrated with Jake because of his laziness and lack of motivation, shown especially in "The Witch's Garden." As a more laid-back character, Jake often tries to relax Finn's fiery personality in the face of a struggle, advising him not to worry in most situations. Though he sometimes leads Finn down the wrong path, Jake genuinely means well for his companion and is usually an encouraging and protecting figure in Finn's life. Finn and Jake have saved each other's lives on several different occasions, and often adventure throughout the Land of Ooo together.



Lady Rainicorn
Finn became friends with Lady Rainicorn after Jake wanted to hang out with both of them at once in the episode "My Two Favorite People". At first Jake regretted introducing the two, but in the end he was glad it happened. Finn and Lady Rainicorn still share a close bond, despite the fact that Finn can't understand Lady Rainicorn's fluent Korean.

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Princess Bubblegum
Finn has a rather obvious crush, which he denies, on Princess Bubblegum. He is known to interact with her more than any of the numerous other princesses of Ooo, and will jump at the chance to do anything for her. Whenever someone says "Finn," "Princess Bubblegum," and "crush" in the same sentence, he growls and blushes fiercely. Finn does get very protective when someone else comes in between them, as seen in "Ricardio the Heart Guy" in which he claimed to be not jealous, but "weird." Though the princess is seemingly oblivious to Finn's affection, she often calls on him for any royal need. In "The Real You" Princess Bubblegum kisses Finn on the cheek, and he faints a moment after the kiss. Finn always eagerly hopes to win the princess over with his heroic deeds. Finn and Princess Bubblegum share a staunch sense of morality and often work together to bring justice and balance to the Land of Ooo. Finn tries to take her on a "date" in "Go With Me," but Princess Bubblegum later bans Finn from the Candy Kingdom until he stops "acting like a psycho" in the same episode (unbeknownst to her, Marceline influenced it). In Mortal Folly, when Finn and Jake are chasing the Lich King, The Ice King keeps nagging for them to give him permission to marry PB. When he says " its not like you want to marry her" Finn blushes and throws a rock at him, hinting that Finn may want to marry PB. Princess Bubblegum also gives Finn a pink sweater that she knitted with a heart on it. This sweater protected Finn against the Lich using the "power of liking someone a lot". He later refers to the sweater as his "like-like sweater". In Mortal Recoil Finn outwardly confessed to the princess that he "likes her a lot", though, it's unknown if she heard him, as she was still being possessed by the Lich at the time. As of Mortal Recoil, Princess Bubblegum has become 13 years old as a result of her doctors not having enough bubblegum to reassemble her at the end of the episode and she later hugs him and calls him, "Hero." This also makes Finn and Princess Bubblegum the same age. Finn sometimes calls Princess Bubblegum "Peables".



Marceline
Though seen as an enemy in her debut, Finn quickly befriends Marceline the Vampire Queen, as he realizes that her seemingly evil ways are just forms of playful teasing. A rowdy and adventurous character, Marceline and Finn share the same vigor and thirst for danger. Marceline finds all kinds of ways to mess with Finn in his head, but are really just mind games of hers. Although Jake still doesn't like Marceline (because Jake is afraid of vampires, but they're good friends- seen in "Heat Signature"), Finn still likes hanging out with her and being "awesome together." In "Go With Me" Finn asks her to go to "Couples Only Movie Night", but only thinks of her as a friend. They were actually grossed out by the idea of kissing (to the point of puking), and likewise Marceline did not want to date him. .

Quotes
See Finn/Quotes﻿

Trivia

 * In the pilot, Finn is voiced by Zack Shada. However, in the series, he is voiced by Zack's younger brother, Jeremy Shada.
 * Finn stated in the pilot that he was 12. However, as of "Mystery Train" he has aged and is now 13 years old, as confirmed by both Natasha Allegri, Adam Muto , and in "Mortal Recoil"
 * Finn is still technically the king of the goblins, even though he left Whisper Dan to take his place, the goblins still believe it's him.
 * In the episode "Ocean of Fear", Finn is revealed to have Thalassophobia, which is a fear of oceans or seas. Finn has no problem swimming in the episodes "Business Time", "My Two Favorite People", and "The Witch's Garden" because he has a specific fear of the ocean, and not small bodies of water such as lakes, rivers, wells or puddles.
 * Finn is going through puberty, as in some episodes his voice cracks, mostly when he screams. A good example of this is in the episode "Ocean of Fear". This is also suggested by an enigmatic answer given by Adam Muto, and his voice is slight deeper at 13 than when he was 12.
 * Finn can sing in autotune as seen in "The Jiggler" (he sings Baby) and "Freak City" (he sings The Hero Boy Named Finn). Finn reveals to Jake in "The Jiggler" that he has the ability to sing in autotune after swallowing a small computer. However, Finn can also sing without autotuned effects, as demonstrated with numerous other songs, such as the Goblin Song, the Stuff Song and the Susan Strong Song.
 * Finn has claimed to be "all about" several things. In "Freak City", Finn says he is "frickin' all about sugar". Yet, he also explains that he is even more all about feeding hobos. In "The Real You" Finn shouts "I'm all about stupid!"
 * Finn has a female counterpart, Fionna, made by Adventure Time character designer Natasha Allegri.
 * In the episode "Slumber Party Panic" a zombie version of Finn makes a cameo appearance seen here.
 * Finn is very tolerant of pain, although in "Crystals Have Power", he cries slightly when Jake pinches him and may have "Cried into his pillow for thirty minutes."
 * Finn and Jake sometimes use math terms for catchphrases (Examples: Mathematical!, Rhombus!, Algebraic!). Finn may do this because Princess Bubblegum is a scientist and that he might be trying to impress her, although Finn is "terrible at math."
 * Finn's favorite color is boy blue, as shown in "The Silent King"
 * Finn has shown his hair three times (To Cut A Woman's Hair, Mortal Folly, & Heat Signature).
 * When Finn has on his doctor suit in "His Hero", he has three Scientific Parasites in his pockets.
 * Finn's backpack has been ripped four times: In "Donny", "Gut Grinder", "Mortal Folly", and "Mortal Recoil".
 * Finn is shown to be strictly allergic to snakes. In Donny, he doesn't get very close to the snakes, pointing out he may be allergic, and in Rainy Day Daydream snakes bite him and his skin turns red, but in The Eyes he can touch them with any trouble.
 * Finn's name is Irish for blonde and Finn's hair is blonde.

Hat

 * Apparently, Finn has always had (or very close to always had) his awesome hat. In the episode "Memories of Boom Boom Mountain" the viewer can see Finn as a baby wearing the same exact hat, except that it is a smaller size.
 * In the Animated Short, the hole in his hat is half of a circle, instead of a full circle in the cartoon.
 * Finn's hat has a small resemblance of Bueno the Bear from "Barrista" which is a short from the creator.
 * His hat somewhat resembles Max's hat from Where the Wild Things Are. Also, the two 'ears' on his hat are portrayed as a cat's ears in FusionFall. It's sometimes referred to as a 'bear hat.'
 * It resembles Mametchi's face or Maxwell's "rooster" hat.
 * It is unknown how Finn can hide all of his hair (before To Cut A Women's Hair) in his hat.
 * It unknown how Finn has pointy ears on top of his head, because they are only shown to be visible when he is wearing his hat. This is proven when he goes bald in "To Cut A Women's Hair".
 * The hat is official merchandise sold online.

References in other media

 * Finn and Jake appeared twice on the series MAD. See References in other media for a detailed description.
 * Finn appears as a playable character on Cartoon Network's TKO where his special moves are Look Out Below (when Jake falls on your opponent) and Sidekick Swing (when Finn grabs Jake's paw and Jake swings him at the opponent) and his super move is when Jake falls onto the opponent with an axe.
 * Finn and Jake were voted best duo of 2010, surpassing Regular Show's Mordecai and Rigby.
 * Finn, Jake, Bubblegum, Lady Rainicorn, Ice King, Stanley the watermelon, and the Reaper are characters in the game FusionFall, in which the player helps Finn save two princesses, get shirts from Stanley, and train with Finn in the petting zoo (Generator Rex).
 * Like most of the main characters, Finn is an Exosuit in the game Project Exonaut.