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The main characters of Adventure Time.

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Finn Mertens a.k.a. Finn the Human
Click here to see Finn without his hat. 
Click here to see Finn from season 8 onwards. 
Voiced by: Jeremy Shada, Jonathan Frakes (adult), David Bradley (elderly)

"Is that what you think adventurers do? Die and make all your friends feel terrible 'cause they couldn't save you?!"

The intrepid human boy and one of the two lead characters of the series. Hyperactive with a love of adventure and good deeds. That thing on his head is actually a hat. Originally 12 years old, he gets older as the series progresses. Yet, he looks no different.

See his page here.

Voiced by: John DiMaggio

Finn's chummy, size-shifting bulldog friend (not pet) and foster-brother. He is more laid back than Finn, but also enjoys adventure. He sometimes gives Finn brotherly advice, but it is not often helpful.

  • Animalistic Abomination: While he's introduced as a dog with stretching and shapeshifting powers, his parents were ordinary dogs. It turns out he was spawned from a bump that appeared on his father Joshua's head after he was bitten by a shapeshifting monster.
  • Ambiguously Jewish: His picture in the Xmas special suggests this.
  • Attack of the 50-Foot Whatever: Part of what his powers entail, the other being shape-shifting.
  • Attention Deficit... Ooh, Shiny!: "Power Animal" deals with how this affects Jake; he wants to find Finn, but keeps getting distracted.
    Jake: (giving his sandwich to BMO) Take my sammich, BMO. I'm gonna look for... (looks at the ground, gasps) A dancing bug!
  • An Axe to Grind: Though it's not very necessary.
  • Badass Adorable: He's a shape-shifting dog who's super flexible and makes the cutest faces.
  • Beta Couple: Becomes part of one with Lady Rainicorn.
  • Beware the Silly Ones: He's for the most part a pretty lackadaisical and apathetic guy who likes a great meal, sleeping, jokes, and fun times with his friends and loved ones. He's also a shape-shifting part-alien Animalistic Abomination and Reformed Criminal who can be insanely dangerous when provoked and has no problems with killing threats. For example, when Finn broke his videogame console as punishment for ignoring training, his response was to declare he was going to break every bone in Finn's body and tried to do just that.
  • Big Brother Instinct: Played with. He's not as physically protective as most examples of this trope, but he is very tuned into Finn’s emotional well-being, and hurting his little brother’s feelings is the surest way to get on Jake’s bad side. He even claims to have a “Finn sense” that tells him when Finn is about to cry, and the angriest we ever see him is when he’s ripping a new one into Princess Bubblegum for breaking Finn’s heart. The last season even suggests that he denies his own emotional well-being and processing of trauma in order to put on a brave face for Finn and protect him.
  • Big Brother Mentor: Sometimes acts as one to Finn.
  • Big Eater: When given a choice of weapons, he chooses sandwich over sword.
  • Big Friendly Dog: Sometimes he's big but he's always friendly.
  • The Big Guy: Given that he's a Sizeshifter, he definitely qualifies.
  • Big Little Brother: He might be slightly younger or the same age as Finn (he was a puppy when Finn was a toddler), but he's clearly taken the big brother role, along with being his general protector.
  • Brilliant, but Lazy: His shapeshifting powers could easily allow him to defeat most enemies if he used them strategically, but he's far too lazy to learn to use them to their fullest.
  • Brought Down to Normal: Brought on by a witch. Jake turns out to be completely useless without his powers.
  • Brutal Honesty: Jake is not known for his tact or patience so he tends to blurt out whatever he's thinking.
  • Canine Companion: Or rather, canine best buddy. Do not call him Finn's pet.
  • Chaotic Good: In-universe-assigned alignment in the comic series.
  • Characterization Marches On: Early episodes painted him as the more Neutral Good reasonable half of the duo, before settling on making him a Chaotic Good Jerk with a Heart of Gold.
  • Cloud Cuckoolander: He can be fairly odd at times, to say the least.
  • Collector of the Strange: In "The Jiggler" he reveals he has a mint condition eyepatch collection. It's never mentioned again.
  • The Corrupter: He sometimes tries to convince Finn to commit morally questionable deeds and even murder when it suits him.
  • Dark and Troubled Past: In "The Apple Thief", Jake says he knows the darker side of the Candy Kingdom. He used to be a criminal who stole purses and hawked stolen bicycles which could explain his actions in "City of Thieves". A later episode actually shows that he was a criminal mastermind who managed to get out of the business (because he realized it was wrong).
  • Depending on the Writer: Like Finn, Jake's morals can shift from episode to episode, though he's always on the good side of the scale.
  • Deuteragonist: It's "Adventure Time with Finn and Jake" after all.
  • Disappeared Dad: He has better intentions than most of the Adventure Time fathers, and he really does love and miss his kids, but "Ocarina" framed this approach as not a good thing.
    • It's implied that since his puppies matured into adulthood faster then he thought they would (to point that he's actually younger than them), he's under the impression that they really don't need him anymore; unlike Finn a growing boy who definitely needs him. Or it could be Jake just being Jake.
  • Distaff Counterpart: Cake.
  • Even the Guys Want Him: Prismo and Tiffany both seem to really like Jake.
  • Evil Laugh: In "My Two Favorite People", Jake pulls this off surprisingly well.
  • Explosive Breeder: By the time of Ooo's future, Jake and Lady's rainicorn pups have exploded into a gigantic Kingdom called the Pup Kingdom, ruled by Jake's tyrannical immortal God-Emperor grandson, Gibbon. The Kingdom has a space elevator and is implied to have offworld colonies and has totally driven the Candy Kingdom into hiding in the Prizeball Guardians. Finn and Jake's successors Shermy and Princess Beth fight against Gibbon's empire to free the magic stolen from Jake's other descendants.
  • Fatal Flaw: His inability to pay attention or focus on a task often acts as a hindrance for both himself and Finn, particularly in " "Morituri Te Salutamus" and "Power Animal".
  • Female Feline, Male Mutt: His genderbent counterpart is a cat.
  • Fetish: Jake has a weird interest in boots, for some reason.
    • In "Freak City", Jake tells Finn he always wanted to be a big foot, and that Finn will understand when he's older.
    • In "Blood Under the Skin" he seemed to really like dressing in lady armor.
  • Furry Reminder: Exhibits canine-like behavior once in a while (i. e. barking).
    • In "The Gut Grinder," he admits that he likes to stick his nose in poop due to there being a lot of interesting smells in it.
  • Gasshole: Often farts and makes fart jokes, usually for fun.
  • Guest Fighter: DLC skin for Kor in Brawlhalla.
  • Half-Dressed Cartoon Animal: Jake appears to be completely naked, but it's revealed in an episode that he's actually wearing pants. Spun by pixies. They're just invisible.
  • Heel–Face Turn: Off-screen one. Jake apparently led a gang of criminals in the past.
  • Heroes Prefer Swords: Yes, he has a sword he sometimes uses. Why he needs it, no one knows.
  • Heroic Comedic Sociopath: Borders on this. Sometimes he's caring, and sometimes he can be quite an asshole, holding off on helping Finn (when he really needs it too) just to suit his own needs (but he usually ends up saving the day). Takes this to eleven in "Furniture and Meat."
  • Interspecies Romance: With Lady Rainicorn. At one point, he's afraid to meet her parents lest they should display Fantastic Racism towards him (there was a war between the two species not so long ago), but it turns out her parents are crazy about dogs, since a dog saved her father's life during the war.
  • Incredible Shrinking Man: He can shift his size, and is capable of making himself smaller than normal.
  • Jerk with a Heart of Gold: The latter part is typically far more obvious than is usual for the trope, but he'll pull out the Jerk occasionally.
  • Kryptonite Factor: Belly-rubs. They render him almost catatonic with pleasure and in extreme cases prone to suggestibility.
  • The Lancer: To Finn, given that he's his best friend and all.
  • Large Ham: He's voiced by John DiMaggio, whose forte is Large Ham characters.
  • Laughing at Your Own Jokes: He cracks himself up so hard when he teaches a couple of nymphs how to carry a joke, he passes out. Though that last part happens after the scene cuts in the middle of his laughing.
  • Lazy Bum: He is Brilliant, but Lazy, after all. This is most prominent when he doesn't have his powers.
  • Like Father, Unlike Son: In contrast to his serious-minded son, Kim Kil Whan.
  • Mellow Fellow: Every bit as laid back as Finn is Hot-Blooded, to the point where he accepted his apparently incoming death after his "croak dream". By his own admission he doesn't care about much of anything and simply takes life as it is. This actually becomes a Fatal Flaw in the "Elements" arc where his lazy and passive personality becomes so overwhelming he almost lets himself and Finn die. In "Together Again," it's this general relaxed attitude and lack of any real desire that causes him to ascend to the 50th Dead World, which is essentially nirvana.
  • Mr. Imagination: In "Rainy Day Daydream", it manifests as Reality Warper powers. Outside of that episode, it's more subtle, but he often does consult with figments of his imagination, daydream, or otherwise let his imagination run away from him.
  • Mundane Utility: Will use his powers in any way that seems useful.
  • Mundane Wish: Everytime, his first choice will be a sandwich. It appears this is because the idea of wishing for something important terrifies him. Indeed, when Prismo explains to him how he has to make an important wish and word it just right; because worlds will end, babies won't be born, and life hangs in the balance, he throws up. Fortunately Prismo walks him through word by word what he should wish for.
  • The Napoleon: Small, but very aggresive.
  • Nice Guy: When he's not being a Jerk with a Heart of Gold, he's normally very friendly and easygoing.
  • Non-Human Humanoid Hybrid: Margaret isn't his biological mother. Jake was born from a lump on Joshua's head that formed after he was bitten by an Eldritch Abomination, and it's highly implied that this is the origin of his strechy powers.
  • Non-Human Sidekick: Not actually all that odd, given the setting.
  • Not Quite Back to Normal: At the end of the "Elements" Mini-series, the World-Healing Wave awakens his full alien shapeshifter heritage, though he doesn't seem to initially notice.
  • Nuclear Nasty: In the alternate universe featured in "Jake the Dog", the radiation of the first Mushroom War bomb turns him into the Lich.
  • Official Couple: He and Lady Rainicorn. He's dead set on eventually starting a family with her, and as of "Jake the Dad", the two had kids.
    • He eventually gets one with her in "Jake the Dad"
  • Older Sidekick: Finn started the series 12 years old and Jake is 28 (this is in "magical dog years" though, and it turns out they were actually born around the same time).
  • One of the Kids: Somewhat. He's old for a dog, but he acts a lot like the Kid Hero (eventually childish-acting Teen Hero) Finn.
  • Overprotective Dad: At first with his and Lady's children, strictly adhering to the manual his mom left for him. He stops when he realizes that, like he was as a kid, his children can take care of themselves.
  • Pals with Jesus: While Prismo falls more into Reality Warper than Physical God, the trope sorta applies. He befriends both Prismo and Cosmic Owl by the end of the Season 5 premiere episode. It benefits Jake greatly because Prismo goes out of his way to help Jake word out his wish to screw the Lich over. He even invites Jake to drop by any time.
  • Papa Wolf: He often acts like a father figure to Finn. He is usually very lazy and indifferent about most things, but when something serious happens to his younger companion, you better not be around. He can sense when Finn is about to cry, calling it a "mother-daughter thing" (which is rather ironic, since he and Finn are both male). He's also generally protective of Finn.
    • His "The Reason You Suck" Speech he made to Princess Bubblegum in "Burning Low":
      Jake: (...) YOU HEARTLESS MONSTER! Do you have any idea how much he's CRIED OVER YOU?! (...)
    • He later tries to be this to his own children, but he ends up veering into Overprotective Dad territory instead.
  • Parental Neglect: Played with in an extremely depressing way. Jake is initially a devoted father who gives up adventuring with Finn to be with his family, and dotes on the pups to the point of being overprotective. However, being half-rainicorn, they grow to adulthood within a few days. While this initially comes off as Negative Continuity, later episodes featuring his family make it clear that the moments we see are the only moments Jake has spent with his children since their birth, to the point where he hasn't spoken to two of them. He seems to be under the impression that they don't need him anymore (like real animals are with their young), but some such as Kim Kil Whan are quite resentful of Jake for choosing adventuring over his family. Although "Apple Wedding" suggests that he's depressed that he never got the chance to raise them properly, and the fact that technically they are actually older than him is something he can't cope with.
  • Real Men Cook: If there's cooking to be done, he's usually the one to do it. He's also exceptionally talented at it.
  • Reality Warper: Using his imagination. Though only for one episode, and for no explained reason.
  • Reformed Criminal: He once ran a gang of bank robbers who were quite successful when he was younger, but he left the life behind. He pulls his gang back together in "One Last Job."
  • Rhymes on a Dime: He seems to enjoy a good rhyme. Forceed Finn to communicate via rhyme during "Ocean of Fear"
  • Rubber Man: Has stretching powers that could give Mr. Fantastic a run for his money.
  • Running on All Fours: Well, yeah, he's a dog. He usually goes around on his hind legs, but he'll go on all fours if he needs to go fast or if Finn is riding him.
  • Serious Business: Whenever he makes sandwiches, burritos... well, anything with lots of ingredients, let's just say he becomes attached to his creations like an overprotective mom.
  • Shapeshifter Weapon: His arms can turn into anything, such as swords, hammers, and even giant weights.
  • Shapeshifting: His signature power that allows him to change into basically any shape he wants.
  • Sizeshifter: He has stretching powers, and can turn himself bigger or smaller than usual.
  • Shipper on Deck: Or at least loves to needle Finn about his crush on Princess Bubblegum. He also looked very pleased when Finn and Flame Princess hugged... And he also got quite excited when he thought PB was jealous. Most likely Jake approves of any sort of relationship Finn has with a girl, so long as Finn's happy with it.
  • The Slacker: He'd rather go with the flow sometimes.
  • Sore Loser: Well, at least when it comes to Card Wars. He grows out of this in "Daddy-Daughter Card Wars", with the help from his daughter Charlie.
  • Spanner in the Works: Jake has trouble sticking to any of Finn's plans.
  • Spider-Sense: Jake has the ability to sense when Finn is about to cry.
  • Story-Breaker Power: Many Finn-centric episodes would actually be solved in two seconds by having Jake around, so his Brilliant, but Lazy personality is used to allow Finn to fly solo and rely on his wits instead, and explain why Jake isn't there (to the point where a couple of episodes actually have Jake shrink down and ride Finn so he can see how it all turns out.)
  • Superpowerful Genetics: "Joshua and Margaret Investigations" reveals that he inherited his powers from a monster that implanted an egg sac in Joshua's head.
  • Super Strength: Jake seems to have this as a Required Secondary Power to his stretchy powers.
  • Trademark Favorite Food: Ice cream. Also sandwiches.
  • Voluntary Shapeshifting: He can shift when he wants to, but he has a limit that makes him super tired if exceeded.
  • Wacky Parent, Serious Child: The wacky parent to Kim Wil Whan.
  • Why Did It Have to Be Snakes?: He used to have a great fear of vampires, especially Marceline.
  • The Worf Effect: His powers are extremely versatile, but he's too lazy to use them to their fullest. When facing high-tier threats such as the Lich, he usually gets knocked out pretty quickly.
  • You Can't Fight Fate: Jake is a very firm believer in this, to the point where he repeatedly attempted to rush to his death due to a supposedly prophetic dream he had.

    Princess Bonnibel Bubblegum
"Hurry, sweet citizens..."
Click here to see her as a 13-year-old 
Click here to see her as an Infant 
Click here to see her as a Fully Powered Candy Elemental 

Voiced by: Paige Moss (2006 pilot), Hynden Walch (the series), Isabella Acres (13 years old; from "Mortal Recoil" until "Too Young"; "Hero Heart" via archived audio), Livvy Stubenrauch (Young; in "Bonnibel Bubblegum")

The young-looking princess and current ruler of the Candy Kingdom. She cares deeply about her citizens. She's also a giant nerd, said to engage in "every branch of geekdom", but not (as far as we can tell) in the Cosplay Otaku Girl way— she's more of a math and science whiz. She's also a hybrid of human DNA and bubblegum DNA (which Finn finds a-TRACTT-ive~!), despite bubblegum not having DNA, hence her name. She's close friends with Finn, who seems to have a crush on her (however much he tries to deny it), but she brusquely refuses any romantic advances. She finds Jake funny and charming, and has a complicated relationship with Marceline. Although she looks sweet, and is, in general, rather nice, she is actually quite quick to anger, and her wrath is best avoided. She also speaks German, apparently. The second season reveals her first name is Bonnibel, and her true age has also been revealed: 827.

  • 100% Adoration Rating: Her subjects would do nearly anything for her (up to and including donating parts of themselves to her) and she returns that devotion.
    • It seems a large part of this is because she views the majority of the candy people as small children who require constant supervision. Honestly, given their actions, she's not that far off. The fact that she literally created them adds to this.
    • However, this seems to wane in later seasons, where we see some of her subjects resent her Big Brother ways, culminating in electing King of Ooo as their new ruler. Luckily she eventually wins her throne back by Season 7.
  • Action Girl: If the beatdown she gave Ricardio is anything go by, she definitely qualifies. And just to make sure it sticks, the chase and knife fight in "Wizard City".
  • Affectionate Nickname: Finn sometimes calls her "Peebles", among others.
  • The Ageless: In "The Suitor," PB's suitors say they have been waiting for centuries. In the flashback of "Earth & Water" (fifteen years ago), PB still looks the same age.
  • Alliterative Name: Her proper name (thus far spoken only by Marceline) is Bonnibel Bubblegum.
  • Anthropomorphic Food: Her body is actually a mass of gum. In Princess Monster Wife, we get to see a cross-section of her head, and she has no physical brain. This is in contrast with Turtle Princess, where we can actually see her brain. See Blob Monster below.
  • Anti-Hero: She becomes this in later seasons. She does whatever she has to for the Candy Kingdom, but her devotion to being the best ruler possible makes her distrustful and emotionally cold, and she sometimes makes very morally dubious choices for what she considers the greater good, or engaging in sneaky political maneuvering. It's been revealed that she constantly spies on the entire world, including her most loyal allies and servants.
  • Badass Adorable: Aww, look, how quirky and cute- Wait, is she firing lasers? AWESOME!
  • Badass Bookworm: She has singlehandedly created a formula to reverse death itself with no side effects! Aside from being a skilled scientist, she's also surprisingly skilled in hand to hand combat, being strong enough to tear Ricardio's limbs off with her bare hands.
  • Badass in Charge: It's pretty easy to see why the Candy Kingdom is as peaceful as it is, with someone like her on the throne.
  • Berserk Button:
    • In "Apple Wedding", we learned she does NOT tolerate having her authority questioned. (Specifically, if they claim if the "One True King of Ooo" has that authority.)
    • In "Broke His Crown", another thing she doesn't tolerate is having her work as a scientist downplayed or discredited in any manner, even if it's not intentional. When Simon innocently assumes she's Betty's assistant because of his lack of awareness to how much has changed outside the Crown, PB loses it, only calming down after Marceline butts in, stopping her and taking over the conversation.
      Princess Bubblegum: Assistant?! I have been my own boss for my entire life, I built my own lab, I created LIFEFORMS!!
    • Her biggest button, however, is betraying her trust. When Gumbald doused Finn in dum-dum juice in an attempt to poison her with it and Peps was affected instead, Bonnie screamed his name in fury and immediately declared war against Gumbaldia.
      Princess Bubblegum: *sniff* *sniff* You've been doused with Gumbald's dum-dum solution... Hrgh... RRRGH... GUMBAAALD!!!
  • Better as Friends: With Finn. After various ups and down, Finn also settles for just being happy being friends with her.
    • On the other hand, "King Worm" and "The Lich" imply that Finn still harbors romantic feeling for Princess Bubblegum. Hinted further when Finn was dealing with depression over the loss of his arm in "Breezy" and it's the sight of her (along with what would be his next sword) that fills him with a loving warm feeling that causes his flower arm to sprout into a tree and getting his arm back. Furtherstill, his happy place as shown in Hero Heart is himself with Princess Bubblegum or rather her younger self, showing he clearly still cares about her beyond platonically.
    • Then there's the fact how Finn is an emotional crutch for Princess Bubblegum and the uniqueness of their relationship. It ends up being Played With since while they are Better as Friends for the sake of allowing Bonnibel to run her kingdom and Finn being a hero, it's evident that the emotional aspects remain complicated.
  • Betty and Veronica: The Archie to Finn's Betty and Marceline's Veronica.
    • She also is the Betty to Flame Princess's Veronica for Finn's Archie.
  • Beware the Nice Ones: As sweet as she is, to invoke her wrath would be inadvisable. Ricardio learned that the hard way.
  • Big Bad Ensemble: Temporarily severed as the main antagonist of the Element miniseries along with Betty and Patience St. Pim..
  • Big Good: She serves as the main authority figure of the series and is usually the one who provides Finn and Jake with their missions.
    • Later episodes imply that she has been helping rebuild society in Ooo after the Great Mushroom War.
  • Big Brother Is Watching: She has extensive surveillance network throughout Ooo, reaching even neighboring kingdoms. At the end of "The Cooler" she takes it down, reminiscent of the scene from The Dark Knight where Lucius Fox destroyed their surveillance network.
  • Blob Monster: The pink goo in "Simon & Marcy" can easily be seen as proto-Bubblegum, but Word of God confirmed that such pink goo in one of the games is Bubblegum's parents. In "Bonnie and Neddy", it's revealed that she was originally part of a massive wad of gum that she refers to as "the Mother Gum"; she eventually broke away from it and over time she grew into what she is now.
  • Blue-and-Orange Morality: Toes the line. Some of her experiments don't exactly seem all that humane or safe, for example, but it seems her priorities are too long-term to show in 11 minutes a week.
    • There are things that can be guessed at. She is centuries old, but she has explicitly stated that she's not immortal. Considering she's also The Ageless, she may very well not be certain of how long her lifespan really is. Between that, how often she and/or the Candy Kingdom are in danger, and how incredibly high-maintenance the candy people are, it's not really surprising how desperate PB is to have either a competent successor or a way to stave off/undo death as soon as possible.
  • Bunny-Ears Lawyer: Her quirks don't show too much, given the setting.
  • Broken Bird: Not quite as bad as Marcy, but trauma over being possessed by the Lich is what drove her to create Goliad, she's a workaholic who emotionally detaches herself from problems, and the stress of being a No Respect Girl ruler can get to her, as well being the subject of several dogged nice guys' scary affections.
    • The season six finale sees her realize how much of a jerk she was to the candy people on top of losing her throne (aka her one purpose in life) to the King of Ooo.
    • "Bad Timing" reveals that she keeps cyanide pills in case her castle is attacked, and the events of the episode drive her to drink at the end.
    • "Something Big" implies that she's repressed so many negative emotions in order to keep herself and the kingdom going, that she's a walking well of raw emotional power, and a prime target for Maja.
  • Celibate Hero: Of the "Love is a Distraction" variety. Finn, Ice King, Ricardio, Braco, and a throng of other suitors have all tried to woo her at one point, but she all turned them down in favor of ruling over her kingdom properly. It's also heavily implied that the reason she and Marceline originally broke up years before the series started was because she needed to focus on the growing Candy Kingdom.
    • Nearly subverted in the episode Too Young. She clearly is indulging her time being a younger girl free of the responsibilities of running the Candy Kingdom. She spends much of the episode having fun with Finn and their time together is saturated with Ship Tease. In fact, in Candy Prison, Bonnibel notes that she wishes to remain young with the heavy implications of her growing up alongside Finn in a not-so-platonic way. However, she chooses to become her older age (namely because Lemongrab's rule of Candy Kingdom is tearing the place to pieces.) though her way of growing up invovles sharing a kiss with Finn.
    • This is finally subverted in Come Along With Me where her renewed relationship with Marceline was confirmed. However, this also came with PB befriending her Aunt Lollie and thus being able to have someone to share power with.
  • The Chains of Commanding: PB occasionally expresses that she'd be relieved to abandon the responsibilities of her position, the problem being that there's no one capable enough to take over for her. Too Young was the first prominent example of her revealing this; she would've been more than happy to remain as a younger lady (and spending time with Finn).
  • Character Development: In "The Cooler", she gets a What the Hell, Hero? speech from Flame Princess and after admitting she doesn't want to be considered a bad person, she stops her Sinister Surveillance. In "Pajama Wars" and later episodes of season six, as difficult as it is for her, she's also trying to mellow out and not be so controlling. After losing the throne, she realizes just how neglectful and controlling she was to her subjects and has started to mellow out more.
  • Cheerful Child: Due to a plot-relevant age-down, she was physically 13, and cute as a button to boot.
  • The Chick: Set up this way in the pilot, but the series makes it clear she fills another role - often at the same time!
  • Cool Crown: It can even protect her from the Lich's mind control. She stopped wearing it when she lost the Candy Kingdom's throne to the King of Ooo, but she got it back after regaining her position.
  • Crazy-Prepared: In "Lady & Peebles" she tells Rainicorn that she has calculated every possible disaster and has brought everything they would need. And also implanted a GPS tracker in Finn's ear at some point in the past.
  • Create Your Own Villain: Her creations have a bad habit of turning against her:
    • Goliad went power mad and has to be trapped in a psychic battle with another sphinx.
    • Lemongrab became a dangerous dictator, who had to be rebuilt to make himself stable.
    • And the biggest of all is her "Uncle" Gumbald. He's just as smart as she is — but infinitely more dangerous and with zero morals.
  • Cute and Psycho: She can be a bit crazy sometimes, but she's still ultimately on the side of good.
  • Cute Monster Girl: She's a very humanoid Candy Person, with most of the others looking like sweets or cakes with faces and limbs.
  • Damsel in Distress: She was captured by the Ice King in the pilot, and being his 'number one', is targeted by him on a frequent basis.
  • Damsel out of Distress:
    • She's only kidnapped by the Ice King when she doesn't have effective countermeasures on hand. When she does, she often out-and-out attacks him successfully (with a tranq gun in "The Glitch", apparently working his pinky over in "Wizards Only, Fools"...).
    • She finds herself in trouble with Ricardio in Lady and Peebles, but she manages to beat him up this time, and it wasn't even close.
  • Deuteragonist: She is the secondary focus of the Stakes miniseries not only being a big in Marceline’s Character development but also due to the King of Ooo arc being resolved in the miniseries as well.
  • Demonic Possession: The Lich pulls this off on her, ultimately leading to her being shattered in the fight against Finn and the Ice King and put back together, but since some pieces were missing she came back younger, as old as Finn to be exact.
  • Doing In the Wizard: Even though the magic and such in Ooo was implied to be something else, even early on in the show, she's the only one to openly debunk it.
  • Dude Magnet: She has Finn and Ice King (and Marceline) vying for her affections, along with all the wizards competing for her kiss in "Wizard Battle" and all the suitors in "The Suitor" (which reveals that at least one Candy Kingdom family have been trying to court her for generations). Lumpy Space Princess points this out in "Bad Timing" and is furious, because while LSP tries to be this PB succeeds without any apparent effort, and isn't interested in any of them.
  • Dude, Where's My Respect?: She gets plenty of worship and romantic attention, but not a whole lot of respect. Comes to a head in "Apple Wedding", where everyone immediately views the King Of Ooo, a complete fraud, as having more authority than her and she rages so much that she nearly ruins the whole wedding.
  • Elemental Embodiment: She is the embodiment of Candy, one of Ooo's four elements, the others being Fire, Ice, and Slime. She learns in "Elementals" that she can shoot candy out of her hands.
  • Emperor Scientist: She's the ruler of Ooo whose power seems to be from the fact that she made most of her candy subjects. (And can make replacements, if necessary.)
  • Face–Heel Turn: Came dangerously close to turning into a full-on Big Bad at several points in Seasons 5 and 6. Fortunately, she was reined in by Flame Princess in "The Cooler".
    • Temporarily under went this when she became a pure candy Elemental. Thankfully she was restored back to her normal self at the end of the Element miniseries.
  • Failure Is the Only Option: Bubblegum makes it clear that she would gladly give up being ruler of the Candy Kingdom because of how demanding the job is. Unfortunately when she has actually stepped down she is shown as lost and longing for it back, both because she has already devoted almost the entirety of her life to it and because her successors are inadequate. So she either keeps at a job she doesn't want or finds herself without purpose.
  • Flat-Earth Atheist: She can be very dismissive of magic, considering it an ignorant term for the use of scientific principles that its users simply don't understand, despite the extremely bizarre nature of Ooo making her skepticism seem arbitrary to everyone else. It should be noted that it's less she doesn't believe magic isn't real, but rather everything called magic is just a subset of science, and goes so far as to call out what scientific principles are being used when she sees magic in action. This is in spite of the fact that one of her friends is a half-vampire/half-demon who is the daughter of a demon lord, one of her associates is a ghost princess, Death is an actual character in the show, and multiple afterlives (called "Dead Worlds") are stated by ghosts and Death to exist. She is implied to have lost this skepticism at the end of "Wizards Only, Fools" when she saw the cold spell in action. Strangely, she didn't have this open skepticism and hostility towards magic earlier in the show, having a fairly cordial relationship with the wizards and even agreeing to give a kiss to the wizard who won a magic competition in Adventure Time S 3 E 8 Wizard Battle.
  • First-Name Basis: At least some people like Finn have started calling her Bonnie after she lost her throne to the King of Ooo. Finn and Marceline continued to do this after she regained it.
  • Food-Based Superpowers: Princess Bubblegum is a "Candy Elemental" and has the power to generate and fire jawbreakers as weapons. She just doesn't use the power because she scorns magic and favors science.
  • For Science!: She does most of her exploits for science when it's not diplomacy or just hanging out.
  • Fountain of Youth: Got de-aged to 13, briefly. Otherwise ages slowly, if at all, apparently.
  • Giant Poofy Sleeves: On her 'princess' dresses.
  • Girly Girl with a Tomboy Streak: She's a Proper Lady who presents herself as a Princess Classic and always wears pink. However, she's also a gifted Emperor Scientist and a Ruling Princess who can be quite ruthless and calculating in the interests of her realm.
  • Gratuitous German: Uses it fairly often in "What Have You Done?", and a few others. She sometimes breaks into it when surprised or worried.
  • Growing Up Sucks: She tells Finn that she would rather stay 13 than turn 18 again and have to deal with the responsibilities that come with being an adult ruler.
  • Guest Fighter: DLC skin for Lord Vraxx in Brawlhalla
  • Heel Realization: After Season Five ramped up her less than desirable traits, Season Six had her realize the error of her ways, with Season Seven being her redemption.
  • Hollywood Science: In general, she pulls this off quite nicely. It's taken to a whole new level in "Five Short Graybles" when she uses centrifugal force, growth and shrink serums a la Alice in Wonderland, Two Beings, One Body teleportation of a jellyfish and a balloon, White Magic with a Black Magic feel, Frickin' Laser Beams, molecular fabrication, karate, a baseball bat and levitation. All to make a sandwich. Keep in mind that this was "the most perfect sandwich to ever exist, or will exist in the confines of space-time".
  • Hot Scientist: At least for Finn. Ricardio comes around to this as well.
  • Hypocritical Heartwarming: As much of a schmuck as Lemongrab is, he's still her schmuck, darn it!
  • I Didn't Mean to Turn You On: She is clearly aware of Finn's infatuation with her since the beginning, but only wishes to have a courtly albeit casual friendship with him. However, after the first battle with the Lich resulted in her becoming 13 years old (physically and mentally), she becomes much more openly affectionate to her hero. Her first action was to embrace him affectionately and the next episode we see them together, she indulges in spending plenty of time with him while being a Cheerful Child, hinting that she is being much more open wih her wants and desires, up to wanting to remain 13 with the implications of growing up alongside Finn. However, she dismisses these moments as "that was five years ago" when she turns back to normal of 18. Then there's this moment from Burning Low, where she thinks Jake listened to her about Flame Princess, but Jake interpreted it differently and told Finn she's jealous. Then there's this line (referring to how Finn being with FP is dangerous because the intense emotions could cause FP's power to go out of control), but Finn (and the audience) understandably interprets this differently:
    Princess Bubblegum: Finn, sometimes you want someone and you want to kiss them, and be with them. But you can't, because responsibility demands sacrifice.
    Finn: What are you trying to say?!
    Princess Bubblegum: I'm trying to say that you're a hero, Finn. You're my hero.
    • After the episode, it appears that she does not have any romantic feelings for Finn. However, her tendency to put the kingdom above her own desires or that of her friends along with her own secretative nature and bottling up her feelings mean it is difficult to guage her honesty. Them being Better as Friends is for her since it allows her to properly rule her kingdom and based on her word choice, let Finn be the hero Ooo needs him to be. Seems to become rather moot by the end though.
  • I Did What I Had to Do: Bonnibel has been forced to take actions that she's regretted for the greater good. Shown clearly in Burning Low when she is nearly forced to allow Finn and Flame Princess to suffocate to prevent the latter from destroying the world.
    • Season 5 throws a lot of this her way. She almost always has a good (or at least plausible) reason for everything she does, but she's not above making sacrifices.
  • Immortality Bisexuality: The series finale reveals that not only did Marceline and Bubblegum have previous romantic history, but also has them rekindling the relationship.
  • Inelegant Blubbering: Bonnibel is not attractive when she cries. When Finn agrees to help her cure her subjects of Freezer Burn Flu, the happiness plus the stress of having her entire kingdom sick nearly makes her burst into tears. Bulging, tear filled eyes, loud sobbing.
  • I Need a Freaking Drink: After she sends Lumpy Space Princess back to a form before she met her true love (who was accidentally erased from existence), she sighs and pours herself a glass of root beer.
  • Insufferable Genius: Pops up from time to time, in the sense that the intelligence gap between her and just about everyone else in the area is wide enough to cause problems. It's been present since "Slumber Party Panic", but really only hits a boil in "Wizards Only, Fool" - they wouldn't have had to leave the hospital if she'd just played along with Starchy's need for a 'magic' cure.
  • Jack Bauer Interrogation Technique: Did this to the Ice King in "Wizards Only, Fools."
  • Jumping Off the Slippery Slope: Subverted in "Rattleballs" when she makes it look like she destroyed Rattleballs.
    • Comes close to it in "The Cooler", but has a Heel Realization thanks to Flame Princess and backs off from the slope as a result.
  • Last-Name Basis: No one (apart from Marceline) calls her Bonnibel.
  • Lawful Good: In-universe-assigned alignment in the comic series.
  • Living Emotional Crutch: She is this to her brother, Neddy, a candy dragon. Unlike his sister, he is very sensitive, docile and is quite fearful of the outside world (implied to be a result of his first experience of living is pain). As such, she is the only person who can comfort him and who he feels comfortable with for the most part.
    • It is heavily implied that Finn serves as this to her as well. Her relatonship with him is unique, being one of her true bonds beyond her maternal figures toward the Candy citizens and said bond possesses a close intimacy surpassing PB's friendship with her fellow princesses with the only other bond being close being with Lady Rainicorn. She relies on him heavily and thinks highly of him. At the same time, she is the one dictating the terms of their bond, at least in the sense of it remaining platonic for the sake of her duties. She also is willing to be secretative with him on a fair bit of matters. Ultimately, she does very care about him alot, including his emotional well-being.
  • Love You and Everybody: Feels an "undifferentiated love" for all of her candy people.
  • Mad Scientist: Some episodes seem to indicate that she's not exactly quite right in the head. Add that and the fact that her scientific exploits (case in point: Lemongrab) tend to go wrong half the time, and we get this. In "The Lich", Finn and Jake find her working late into the night creating tiny candy people who farm in a tiny candy sandbox. Then she cuts off one's limbs with a scissor and attaches them to another (which they don't seem to mind much), for no stated reason.
  • Mama Bear: She acts this way towards Lemongrab in "You Made Me!", and is in general willing to go to extreme lengths for the sake of the Candy citizens.
  • Meaningful Name: Her first name is Bonnibel, which means "beautiful girl". Which makes sense considering she was Finn's crush from Seasons 1-3 and is the main princess the Ice King targets.
  • Mini-Mecha: Seems to be wearing one in "Wizards Only, Fools". What's odd is that it only covers her upper torso and follows her arms' movements, leaving her legs fully exposed (with the undersuit she's wearing possibly acting as Powered Armor, though there's nothing for or against this). It's unclear why exactly she felt the need to wear it, though she likely came directly from getting the Ice King to reveal the Wizard City password - Rorschach-style by the sound of it.
  • Modest Royalty: During her off-hours, she's generally very content to hang out with Finn and Jake on their adventures wearing clothing much more simple than you'd expect for royalty, with the exception of keeping her crown.
  • More Dakka: Whenever there is a pressing need for her to save her kingdom/friends through direct action, Peebles will do so with as much force as she can reasonably pull together. Note that she already has a laser-firing joystick-controlled swan bigger than she is - she had at least two guns in "Lady & Peebles", one of which was roughly equivalent to a grenade launcher.
  • Motherly Scientist: Played with; she mainly comes across as a Mad Scientist, and as a result initially had a rather strained relationship with Lemongrab, who she considered to be a failed experiment. Later on, she tries to be more motherly towards Goliad, but when Goliad goes mad with power and attempts to take over the Candy Kingdom PB has no choice but to abandon that attitude in order to stop her. However, she's slowly improving her relationship with Lemongrab, and he even calls her "Mother Princess." She treats the Lemongrabs the way a frustrated but patient mom would treat her annoying "special needs" children, and calls them "boys" affectionately. She even says something along the lines of "I need to keep a closer eye on these two, so they won't get into any more trouble. " As of "Too Old" and "Lemonhope Part 1 and 2", how well this applies to the way she views the Lemongrabs is questionable.
  • Ms. Exposition: Often. Unfortunately, she tends to explain things from a broader perspective than necessary - "Burning Low" would have been a lot shorter if she'd given Finn the same explanation she finally gave Jake, for example.
  • My God, What Have I Done?: "Nemesis" strongly implies that her I Did What I Had to Do tendencies are freaking even her out, as she's awkward when asked about the rattleballs robots, and she thinks she's the evil one Peace Master is looking for. She's not, it's Peppermint Butler.
  • Necessarily Evil: Hynden Walch describes her as a "selflessly evil" character, since she wants to do good and stabilize the land of Ooo, but unfortunately her methods of doing so border on dictatorship. Following "The Cooler", she has begun to move away from this.
  • Nerds Are Sexy: Again, at least according to Finn. Even if he doesn't admit it.
  • The Noseless: Like most people in Ooo, she lacks a visible nose.
  • No Respect Girl: She was the one who created the Candy Kingdom and the majority of the candy people, so is angry when the King Of Ooo waltzes in out of nowhere, is proven to be a fraud and her subjects would still rather obey him than her just because he has a higher title.
  • Not So Above It All: With a little coaxing from Finn and Jake, even she finds the antics of the Banana Guards chasing the Jameses funny.
  • Nice Girl: Most of the time, Bubblegum is a sweet-natured, kind girl. Unfortunately, it's layered with deep-suited trauma, dishonest tendencies and her insistence in trying to bring order to Ooo.
  • Obliviously Evil: When Bubblegum was overrun by her Elemental powers and became a pure candy Elemental she began turning everyone she could into idiotic candy zombies, but did not realize what harm she was doing to them at the time, and actually thought that everyone was happier that way.
  • Odd Name Out: She's the only princess in the series whose name doesn't follow the "(Descriptive Noun) Princess" formula. (There's also Princess Business, but she's only mentioned, never shown.)
  • Official Couple: With Marceline as of "Come Along with Me".
  • Out-of-Character Moment: Bubblegum is usually a Damsel out of Distress, saving herself or at least angry that she's in peril. Which is why it's weird in James II where she's just standing in the same place scared when Zombie!James menaces her, thus letting the other James save her and prove himself.
  • Pet the Dog: Although she was never a bad character at all, in "Come Along With Me", she ordered her Banana Guards to run for their lives from the Monstrosity that GOLB created, clearly cementing her as empathetic.
  • Plague Doctor: When the plague caused accidentally caused by the ice king was afflicting the Candy Kingdom, she is seen in this outfit.
  • Plot-Relevant Age-Up: In "Too Young", she has to become eighteen again to regain the throne from Earl Lemongrab.
  • Potty Emergency: Happens to Princess Bubblegum at the beginning of the Lumpy Space episode. "I should not have drank that much tea!"
  • Pride: A major Fatal Flaw of hers. She's so adamant that magic isn't anything special that she refuses to pretend to use magic on Starchy to make him feel better. So she's forced to go to Wizard City and drag Finn and Jake along. The Grand Master Wizard offers them forgiveness for trespassing, so long as PB says that "wizards rule." Of course, she refuses and degrades and derides their beliefs about magic, and thus gets herself, Finn, Jake, and Abracadaniel thrown in Wizard Prison.
  • Pragmatic Hero: Don't let first impressions fool you: she's willing to stoop pretty low in various situations.
  • Pretty Princess Powerhouse: Princess Bubblegum is prim, proper, poised, very pink and also one of the best defenses that her kingdom has. She also singlehandedly defeated Ricardio, even when he hurts Lady Rainicorn. Even Finn, her champion, occasionally needs her to bail him out of trouble.
  • Princess Classic: Mostly an Affectionate Parody of the trope, but is often played straight. She is prim, proper, poised, is frequently a Damsel in Distress, and loves pink.
  • Princesses Prefer Pink: Note that she does have other outfits, several of which aren't very pink - the ones she wears as Princess are all pink-ish.
  • Pure Is Not Good: She is sweet, kind, friendly, and has a strong sense of justice. Precisely, that is the reason why her methods of justice are morally questionable or dictatorial.
  • Rapunzel Hair: She's a princess so it goes down to her knees (when she has it down).
  • Really 700 Years Old:
    • She's at least 300. In the game Adventure Time: Explore the Dungeon Because I DON'T KNOW!, she tells the Ice King that she's 827 years old.
    • In "The Suitor", it's revealed PB's various suitors have been waiting to court her for hundreds of years.
    • It's been demonstrated via flashback that scales back centuries (and finally outright acknowledged by Finn) as of "The Vault".
      Finn: PB, you are like a bazillion years old! You're not freaking 19! What the heck?!
      PB: (embarrassed) Hahaha...
      Finn: Weirdo.
  • Realpolitik: Has been steadily getting more willing to keep tabs on everyone, and is willing to directly sabotage other kingdoms (particularly the Fire Kingdom) to maintain peace. However, she also emphasizes using peaceful means first, only stepping up to more violent methods when those have failed.
  • Rose-Haired Sweetie: She's a sweet princess most of the time.
  • Royals Who Actually Do Something: May actually be the most active of all the Princesses in Ooo. Not that the bar is set terribly high; the only other princesses who seem to do anything other than "exist" are Turtle Princess, who is a librarian, Lumpy Space Princess, who is basically a hobo and occasionally picks up odd jobs (like being an "adventure secretary"/"writer" in "Gotcha!"). The only other princess with a decent track record of doing stuff is Fire Princess, who threatened Candy Kingdom, adventured with Finn, and usurped her father and turned Fire Kingdom's Card-Carrying Villain nature around. Also deconstructed as she often burdens herself with too much to do and she feels crushed by her responsibilities.
  • Rubber Woman: Far more downplayed than Jake, but in "Have You Seen The Muffin Mess", when the plague cuts off her arm, she can stretch her bubblegum self into a new one with fingers.
  • Sanity Slippage:
    • PB's been getting more and more... stressed... over the course of the series.
    • Before that, in "The Duke", Finn accidentally hitting her with a bottle that turns her skin grin and makes her hair fall out causes PB to go... well, nuts.
    Princess Bubblegum: Bring [the Duke of Nuts] to justice! (suddenly maniacal) The justice of a cold dungeon! (cackles insanely)
  • Science Hero: Bubblegum's scientific intellect has gotten Finn, Jake, herself, and the whole kingdom out of trouble at times - even if it was her scientific exploits that got them into trouble in the first place.
  • Screw the Rules, I Make Them!: Experimenting on living creatures? Creating new life from your friend's DNA without asking? Preemptively destroying other kingdom's forces? Dictating her subject's lives to the point of who marries who? Hating someone for eating pudding? Sending your hero off to beat the snot out someone for the greater good? Don't worry, it's fine. It doesn't really matter how questionable her activities are, because Princess Bubblegum is the sole ruler of the Candy Kingdom. She gets to do what she wants, no matter how morally questionable. Though she is sometimes persuaded by her friends to stop certain behaviors, there's nothing making her do anything.
  • Sherlock Scan: Bubblegum is shown to have this ability in "Sky Witch".
  • Sinister Surveillance: She admits that she spies on everybody in "The Cooler", and doesn't find it to be an issue that people are disturbed by this. By the end of the episode, she seems to get the hint, and unplugs her entire secret surveillance system and locks up the door.
  • The Smart Girl: She's very skilled when it comes to scientific matters.
  • The Sociopath: Rebecca Sugar described her as such, though clarified that she wasn't a literal example and more a case of someone trying to be like one, suppressing emotions and empathy for what they perceive to be the greater good. Starting with Season Six, she's started to change upon realizing how unhealthy this way of living is.
  • Sophisticated as Hell: She provides shades of this, shifting from words like "shall" and "beseech" and phrases like "You seem genuinely penitent" to words like "hun" and "ah-ight" and phrases like "You'd better not freakin' tell anyone!" and "Mondo momma brains!" and "ballblamburglerber".
  • Sour Supporter: Spends most of "Wizards Only, Fool" like this. As she's clearly having to go considerably out of her way (both physically and philosophically) to satisfy a request from one of her subjects, it makes sense.
  • Spear Counterpart: Prince Gumball.
  • Stereotype Flip: Of Princess Classic. She's so pink she's bubblegum, with a modest pink dress and Rapunzel Hair as her default look, but she's actually a Broken Bird workaholic who'll protect her kingdom no matter what the cost and keeps cyanide pills in her meeting room.
  • Surrounded by Idiots: Most of her subjects are pretty dumb. Turns out she made them that way to ensure their loyalty, and also because they appear to be a lot happier as such. Whenever they become intelligent rational beings, they tend to be treacherous jerkasses.
  • Teen Genius: Likely the smartest being in Ooo. Though how 'teen' applies to her is a little questionable.
  • Tomboy and Girly Girl: Girly Girl to Marceline's Tomboy, with appropriate consequences to Marceline's dating advice for Finn. (The show makes it clear that Bubblegum is fully capable of doing 'tomboy' things, and the trope as it is applies primarily to their preferences.)
  • Took a Level in Badass:
  • Treehouse of Fun: Her castle is built around a tree.
  • Unfit for Greatness: Half the time she calls on Finn, it's to make up for her own oversights. Understandably, a lot of this is due to how thinly stretched she is as top scientist and best living diplomat in Ooo, in addition to running the Candy Kingdom part time with little help better than Cinnamon Bun.
  • Unlimited Wardrobe: At least fifteen outfits besides her stock pink dress.
  • Unwanted Harem: There was a point that Finn, Ice King and Ricardio all had crushes on her. She's not comfortable with their romantic pursuits (with the exception of Finn, where there are hints her feelings for him are not entirely platonic.)
    • She literally has a harem of suitors waiting to date her as seen in "The Suitor". She makes it clear that she wants to focus on her studies and doesn't date. Because of this, some of the suitors have been waiting hundreds of years.
  • Well, Excuse Me, Princess!: Marceline kinda implied this regarding her relationship with Princess Bubblegum in her song in 'What Was Missing'. "Sorry I don't treat you like a goddess", indeed.
  • Well-Intentioned Extremist: She means well overall, but is willing to pull drastic action if she believes it will aid her citizens. It says something when her own voice actress describes her as a "selflessly evil" kind of character. Flame Princess calls her out on this in "The Cooler".
  • What Measure Is a Non-Human?: Considers her subjects expendable, as she can make more. She has prevented Finn from sacrificing himself and allowed a candy subject to do so because of this specifically.
  • The Woman Wearing the Queenly Mask: She's composed and has the well-being of her kingdom as her foremost concern. However, it's been shown to be detrimental to her emotional well-being and mental health. She desires time and time again to be free of the mask and it left her isolated. It's implied that it's what cost her first relationship with Marceline and why she ultimately never ended up with Finn.
  • You Do NOT Want To Know: Finn, Jake, and Marceline all agree it is best not to know what PB is up to in her lab.
  • You Gotta Have Blue Hair: Has pink hair. Justified since she's made of bubble gum (if it even is hair at all).

    Lady Rainicorn
"이게 더 좋아?" note 
Voiced by: Dee Bradley Baker (2006 pilot), Niki Yang (the series)

An odd-looking but beautiful, flying half-rainbow-half-unicorn creature. Also Jake's girlfriend and as of season 5, the mother of their children. She only speaks Korean, which Jake, but not Finn, understands.

  • Action Girl: She's not afraid to go into combat.
  • Badass Adorable: She's able to keep up with Finn and Jake in "My Two Favorite People", and she even has to save Finn from the army of lake monsters. Surprising, considering she looks like a little girl's toy.
  • Beta Couple: Forms part of one with Jake.
  • Bilingual Bonus: Given that she only speaks Korean, this is inevitable.
  • Casual Kink: She's often innocently (and on occasion, not-so-innocently) flirtatious with Jake in public.
  • Cool Pet: Both her and her male and monochrome counterpart.
  • Covert Pervert: Some of her untranslated remarks to Jake are raunchy as all hell.
  • Demoted to Extra: Since Season 5, Lady has become gradually less important, with the last few seasons barely giving her any dialogue.
  • Does Not Speak Common: Her preference is to speak in Korean, but she's been known to deliver the occasional Wham Line in English.
  • Everything's Better with Rainbows: Crossed with unicorns? Even better.
  • Explosive Breeder: By the time of Ooo's future, Jake and Lady's rainicorn pups have exploded into a gigantic Kingdom called the Pup Kingdom, ruled by Lady's tyrannical immortal God-Emperor grandson, Gibbon. The Kingdom has a space elevator and is implied to have offworld colonies and has totally driven the Candy Kingdom into hiding in the Prizeball Gardians. Finn and Jake's successors Shermy and Princess Beth fight against Gibbon's empire to free the magic stolen from Jake and Lady's other descendants.
  • His Name Really Is "Barkeep": She doesn't have a noble title- her given name actually is Lady and Rainicorn is her family name as well as her species.
  • Intangibility: She can phase through walls, as revealed in "The Creeps".
  • Interspecies Romance: She (a rainicorn) forms a Beta Couple with Jake (a bulldog).
  • Multicolored Hair: Inverted; she has normal blonde hair, but a multicoloured body.
  • Nice Girl: She is never shown to be anything but kind and placid, even making the effort to spend time with her boyfriend's kid brother just to get to know him.
  • No Sense of Humor: At least when it comes to knock-knock jokes. We don't know what she said in "My Two Favorite People", but Jake tells Finn it wasn't "Who's there?".
  • Non-Human Sidekick: To Princess Bubblegum.
  • Not Quite Flight: She technically rides on reflected light. She turns in early, but can still fly by night.
  • OOC Is Serious Business: Other than when she's using the Universal Translator, Lady only has one line of English dialogue in the series: "I am pregnant!"
  • Out of Focus: Prominent in earlier seasons but doesn't show up often in later ones.
  • Parental Abandonment: Averted as she is the only character shown to be on good terms with both of her parents.
  • Pregnant Badass: Serves as Bubblegum's steed even when carrying babies.
  • Spear Counterpart: Lord Monochromicorn.
  • Superpowerful Genetics: Her children and descendants with Jake all have mutations granting them each unique powers. This expands to an entire kingdom in the future where every citizen is born with a power.
  • Technobabble: She flies by... er... dancing on photons?
  • Undying Loyalty: Her translated dialogue shows that she thinks very highly of Princess Bubblegum and takes great offense at any intrusion on the Princess' honor.
  • Transformation Ray: Downplayed; she can shoot a beam from her horn that can change the color of whatever it hits.
  • Unicorn: Half, anyway.
  • The Unintelligible: Finn can't understand her in the 2006 pilot—Jake can. In the pilot, she only communicated in a series of burbling sounds; in the series, she speaks Korean.

"Who wants to play video games?"
Voiced by: Niki Yang

BMO, pronounced Beemo, is Finn and Jake's cute Animate Inanimate Video Game system. A bit of a rebel, Beemo sometimes enjoys turning up their volume too loud and running out of batteries during a game. Speaks with a Korean accent, and looks like cross between a Game Boy, Macintosh and a Vectrex. Was built by pre-Mushroom War robotics engineer Moseph Maestro Giovanni to be a companion and best friend to the son he never had and eventually sent into the world by said inventor to "Be More" and find a family.

  • Ambiguous Disorder: ''BMO Noire" implies that he's schizophrenic. There is one montage of clips, presented to him via dream sequence, showing him setting up the crime scenario, yet he does not address this and apparently has no memory of doing so.
    • "Five Short Graybles" and "Five More Short Graybles" show BMO having a conversation with his reflection, naming her "Football." The episode "Football" confirms he genuinely believes Football is real and that he switched places with her.
  • Ambiguous Gender: Typically referred to as a "he", but was referred to as "M'lady" by Finn in the season 3 premiere. However, he (?) called himself (?) a boy in "Five Short Graybles". And in "Five More Short Graybles" his (?) alter ego claimed to be a "real baby girl". The version of him/her seen in the Fionna and Cake stories looks exactly the same, so that's no help either.
    • In the Pixel Princesses comic BMO wishes to become a princess and is eventually made an honorary one — and the Grand Finale reveals that in the far future he has become the legendary King of Ooo.
    • The WonderCon Q&A panel confirmed that BMO is genderfluid, and both male and female pronouns apply.
    • In the Munchkin Adventure Time board game, every character has a card with two sides, depicting the normal character and genderbent Fionna and Cake counterpart (as in Munchkin, your character's STARTING gender is the same as your own). While BMO's card has two sides and two different pictures, no gender can be derived from them and his card outright states that BMO outright ignores any gender-related stuff in the game.
  • Animate Inanimate Object: He's a living video game console.
  • Become a Real Boy: Or they want to, anyway.
  • Breakout Character: Went from a fairly minor character in the first couple of seasons, to being a main character in their own right with several A Day in the Limelight episodes.
  • Cassandra Truth: When Jake tells BMO not to mention any of his past life of crime to Finn in One Last Job, but BMO manages to forget keeping it a secret from him. Finn dismisses it as BMO being over-actively imaginative anyway.
  • Character Development: While developed initially as a comedic character to play off of Finn and Jake, BMO has grown to be a very complex character, particularly in his A Day in the Limelight episodes. Their association with minor episodic characters are often actions of brutality, love, matronly care, or despair.
    • In "James Baxter the Horse," BMO sings about being pregnant, carrying around an egg. A butterfly knocks the egg out of BMO's grasp, it shatters on the ground, and BMO starts crying.
  • Cloud Cuckoolander: BMO has a bizarre imagination and can get completely lost in it when left alone.
  • Covert Pervert: She watches two slugs make out in "Slow Love".
  • Cute Machine: Lampshaded by Marceline in "Evicted".
    Marceline: "I'm invested in this very cute video game!"
  • A Day in the Limelight: "BMO Noire", "BMO Lost", "Be More", and "The More You Moe, The Moe You Know"
  • Do-Anything Robot: BMO can serve whatever function is convenient for the plot. For instance, one time they edited and played back a home movie with a custom background song.
    • And sometimes subverted, like the "ghost-detecting machine" in The Creeps.
    Bubblegum: So, who's the ghost, BMO?
    BMO: Oh, um... I don't have ghost-detecting equipment. I just like taking nice pictures.
  • Eating Machine: BMO's very fond of hot chocolate despite not actually having a mouth. BMO can't actually eat anything, but tries anyway.
  • Future Badass: In the last few episodes it's stated that some time in the future BMO becomes a legendary ruler of all of Ooo for a period of time before retiring to live atop a mountain.
  • Grew Beyond Their Programming: Mo built and programmed him to "Be More" then just an average robot
  • Heart Is an Awesome Power: BMO's main purpose is to give love. Most of the time this means that they're not very helpful in a fight. However, it makes BMO the Hope Bringer in the final battle with GOLB, allowing them to turn the tide when virtually every major character was about to perish.
  • Magic from Technology or Magitek: No further explanation is given how a video game came to life and gained consciousness, which leads to fan speculation.
    • Eventually is revealed to be a unique robot built by the MO robotics company programmed to "Be More"
  • Malaproper: Especially in "BMO Noire".
    BMO: "I feel like I was hit with a Dracula by King Kong".
  • Massive Numbered Siblings: While unique, BMO's creator made a large number of other Mos, who recognize BMO as family.
  • Meaningful Name: Mo revealed BMO is short for Be More.
  • Mirror Monologue: Only in the graybles... usually.
  • Mr. Imagination: Takes it to really bizarre heights.
  • No Biological Sex: Since BMO's a robot, BMO isn't programmed with sex protocols.
  • Papa Wolf: Ultimately, when they turn the tide of the GOLB battle in the finale:
    BMO: It's okay, Jake. You always try to protect me and Finn, but sometimes we are going to get hurt. How about today, you let me be the papa?
  • Phantom Zone: It's only ever been seen in one episode so far.
  • Retraux: Crosses over into this, as BMO displays pixellated graphics and plays 8 bit music.
  • Protectorate: Jake orders BMO to watch over a distraught Finn while he heads off to the Flame Kingdom. BMO's reacting a little too enthusiastically is par for the course.
    BMO: If anyone tries to hurt Finn, I will kill them!
    Jake: ...Okay, good.
  • Split Personality: Football may or may not be this to BMO.
  • Talking Appliance Sidekick: More of a supporting character than "sidekick" but it still counts.
  • Tagalong Kid: While certainly not a kid in the conventional sense, he's often treated like a rebellious child by Finn and Jake, particularly in "Slow Love". Which may qualify as Hypocritical Humor, given that Finn is a Kid Hero and Jake acts like One of the Kids.
  • Time Abyss: BMO actually predates the "Mushroom Wars" By the end of the series in the Epilogue(set 1000 years in the future) he's the only character we recognize who hasn't changed.
  • Tin Man: In "Donny", BMO states how as a machine she can not feel pain or emotion but states that she very much hates Donny.

    Lumpy Space Princess
Voiced by: Pendleton Ward

A purple, floating Lumpy-thing with a star on her head and a pushy attitude. Also, she's apparently Latina.

  • Attention Whore: She crashes Tree Trunk's wedding dressed in a wedding gown of her own, saying that everyone is ready to pay attention to her.
  • Big "NO!": Played for Laughs when Finn and Jake spill her beans in "Heat Signature".
  • Bratty Teenage Daughter: To her parents.
  • Character Development: For a long time she'd run away from her parents in a rather immature fit of rebelliousness, being too contrary to admit she couldn't handle the rough life. After Finn and Jake help her reconcile with her parents, however, Word of God indicates that she had discovered a love of nature and the independent life and now spends a lot of time living in the woods (hence her appearance in "Gotcha") while being on good terms with her parents. "Gotcha!" also establishes that LSP is now a published writer.
  • Cloud Cuckoolander: She comes from a whole realm of these, and often breaks out into party mode at random intervals.
  • Deuteragonist: After Jake gets absorbed by Slime Princess, she takes his role as the secondary protagonist in the Elements miniseries. She’s even the one that saves Ooo in the end.
  • Drama Queen: No further explanation needed.
  • Earn Your Happy Ending: By the end of the finale, Lumpy Space Princess became the new queen of Lumpy Space and finally gained the respect of her fellow princesses.
  • Element #5: Lumps takes this role in Ooo's elemental cosmology, making her immune to the elemental kingdoms in the Elements mini-series and allowing her to fix things.
  • Everyone Calls Him "Barkeep": LSP for short. It also happens to serve as a formal title (she's the princess of Lumpy Space) and as a description of her (she's a space princess, and she's really lumpy).
  • Forgetful Jones: She can be ridiculously forgetful at times. In "Video Makers" after Jake tells her they're filming a food fight scene she immediately forgets they're filming a scene and gets mad when Peppermint Butler throws food at her.
  • Gonky Femme: She doesn't look or sounds remotely feminine, but is a stereotypical valley girl nevertheless.
  • Hidden Depths: As of "Gotcha", it would seem that LSP actually enjoys the homeless life. She's also apparently a pretty good writer.
  • Honey Trap: Tries to seduce Finn with her lumps so she could write a book.
  • Interspecies Romance: Her crush on Finn, which sparked after her ex broke up with her.
  • Jerk with a Heart of Gold: She can be a tad hard to get along with at times and tends to be self centered as a byproduct of being a Lumpy Space individual (Finn and Jake came down with similar personalities when they turned Lumpy), but she's really not that bad a person deep down and genuinely considers Finn and Jake her friends.
  • Karma Houdini: Has a tendency to become violent when she doesn't get her way. She's also accidentally banished someone to another dimension, almost burned down the Candy Kingdom, and may or may not have raped Finn while he was physically and emotionally compromised.
  • Large Ham: For joke purposes.
  • Last-Minute Hookup: In the finale, Lemongrab 3 and Lumpy Space Princess smooch when all looks lost. Word of God stated that they probably dated for at least a little while afterwards, but shrugged when asked if the relationship would last.
  • The Load: Is typically the least helpful one in the group.
  • Lovable Alpha Bitch: She has a lot of issues and jerkass moments, but she's endearing and sometimes means well at least.
  • No-Sell: In the Elements mini-series, the conversion that results from exposure to the elemental kingdoms doesn't affect her at all. This is because of the nature of lumps in the elemental cosmology.
  • Plucky Comic Relief: She's often a source of comic relief, even though she's got darker herself in season five/six times.
  • Precocious Crush: Inverted. She's 15, but has a crush(?) on 13-year-old Finn.
  • Phoneaholic Teenager: She is constantly gossiping through her mobile phone even though she's homeless and living in a forest, on canned beans.
  • The Runaway: Sometime before "To Cut a Woman's Hair" she ran away into the forest and still lives there as of "Heat Signature". She returns home in "The Monster". In "Gotcha" she's once again roughing it, but apparently only because she wants to and is still on good terms with her parents.
  • Shipper on Deck: The Elements miniseries hints that she, while having a small interest in Finn, genuinely believes that he and Fire Princess should be together. At one point where Finn and a maddened and empowered Flame Princess start fighting, she casually mentions while watching the fight that she could still picture the two together. In "Happy Warrior", she makes various comments attempting to get out of Finn the answer that he is still interested in FP and doesn't buy that he is genuinely proud of their friendship.
  • Silicon-Based Life: Lumpy Space people are made of irradiated stardust.
  • Speaks Fluent Animal: Part of the reason why she was able to survive in the wilderness for as long as she did is because she can understand what animals are saying through their body language. Or at the very least, she thinks she can.
  • Spear Counterpart: Lumpy Space Prince. Amusingly, and unlike the other counterparts, they have the exact same voice.
  • Suddenly Ethnicity: Apparently LSP's Latina. She had a Quinceañera in "The Eyes".
  • Thinks Like a Romance Novel: Or a teen drama. Borders on Blue-and-Orange Morality at times.
  • Took a Level in Jerkass: In season five and six, she tried to burn down the candy kingdom out of perceived jealousy and had a grey-consenting make-out session with Finn. She seems to realize this though, and "Be Sweet" demonstrates some serious self-loathing.
  • Valley Girl: With a deep, grunting valley girl accent at that. It doesn't help that all of the Lumpy Space people speak like that.
  • The Virus: Her bite gives you "The Lumps", turning you into a Lumpy Space version of yourself, and if you don't get antidote by sundown, it's permanent.
  • Vocal Dissonance: Her voice is very masculine, to say the least.
  • World-Healing Wave: When given Ice King's crown and the elemental jewels from PB, Flame Princess and Slime Princess, she's able to undo the elemental transformations and restore the world to normal.

    Marceline the Vampire Queen
"Dang, man, I didn't think you'd ever catch on!"
Click here to see her as a 7-year-old 
Click here to see her as Marshmaline the Campfire Queen 

Voiced by: Olivia Olson and Ava Acres (as young Marcy), and Cloris Leachman as the elderly Marceline in the Farmworld universe

The queen of the vampires (by default as she killed all the other vampires, including the king). Known to be extremely unempathetic but never cruel, simply doing whatever she pleases even at the expense of others. Was alive at the time of the apocalyptic 'mushroom war'. Subject to a lot of fan "attention", for whatever reason; became extremely popular while only appearing twice in the first season, not counting the opening credits and brief cameos.

Usually decked out in punk-rock apparel. She generally tries to be cool and rather unfeeling, she harbors a very broken spirit due to loneliness in living forever, among other things. Whenever her more sensitive or emotional side is shown, she gets angry. She and fellow immortal Ice King also share a long and painful history together, and she spends much of her time finding and moving into new houses to avoid him.

  • Action Girl: She can definitely handle herself in wild situations. Although her lazy side makes it so she doesn't get to show it off much.
  • Affably Evil: When she was an antagonist (which lasted for about one episode, not counting her trickery in "Henchman"); since then she's settled into a more neutral type of personality with a general Lack of Empathy, being more Affably Amoral than anything.
  • Affectionate Nickname: Finn and Jake sometimes call her "Marcie". Ash calls her "Mar-mar".
  • All-Powerful Bystander: As one of the most powerful creatures in Ooo, she could easily defeat almost any other character in the show, especially if she started eating souls and stealing powers, but she prefers to either stand back and watch, or simply ignore everything. Justified, As after spending centuries traversing the Land of Ooo, Marecline had become rather cynical and does not believe much will change in the end even if she did help.
  • Always a Bigger Fish: To the vampires. In a more literal twist on this trope, this isn't due to Marceline being significantly more powerful than the vampires, but because she devours them just as they devour humans, and more effectively for that matter since Marceline devours their entire physical forms and even get their powers.
  • Amazon Chaser: Shows very obvious signs of attraction to Susan Strong in the Islands mini-series.
  • Ambiguous Disorder: She is overly flirtatious with others, displays mild sociopathic tendencies, and seems to have trouble understanding other people's emotions. At the same time though, she is also a vampiric cambion (heck, her dad is the ruler of Ooo's version of Hell, the Nightosphere) and it's later revealed that beneath her cheerful and easygoing exterior, she has suffered a lot of personal losses and fears getting too close to people as a result, despite desperately wanting to.
  • And Then John Was a Zombie: She used to hunt vampires, even dedicating herself to wiping them all out, but was turned while taking down the Vampire King and his minions.
  • Anti Anti Christ: It's suggested because her father is evil incarnate.
  • Attack of the 50-Foot Whatever: Does this all the time, but thus far never in her Cute Monster Girl look; she prefers scaling herself up into monstrous forms for combat purposes. See One-Winged Angel below.
  • Author Avatar: For Rebecca Sugar. She's a bisexual musician with a sensitive and soulful heart.
  • Bat Out of Hell: Frequently turns into a odd-looking bat when she wants to hide, and she has a giant version that she assumed in her first appearance. She also begins transforming into this state when extremely hungry.
  • Bare Your Midriff: In the Stakes miniseries.
  • Berserk Button: A few, but most notably stealing or mocking Hambo or Ice King in any way is a good way to get on her bad side.
  • Breakout Character: Marceline started as a somewhat more prominent than normal secondary character. Although she doesn't appear in many more episodes that she originally did, she has more or less became a main character. She got her own 8-part miniseries exploring her past in the seventh season.
  • Broken Bird: She's had a very harsh life, been betrayed by a lot of people, and scares people away out of fear of it happening again.
  • Brought Down to Badass: When her vampire essence was removed, she reverted back into half-demon with soul stealing abilities.
  • Cannibalism Superpower: She got her wide variety of powers by eating the souls of other vampires who previously possessed them.
  • Chaotic Neutral: In-universe-assigned alignment in the comic series.
  • Characterization Marches On: Goes from being antagonistic to a Heroic Neutral.
  • Combat Sadomasochist: A minor case.
    "Yeah, it hurts, but I kinda like it. It reminds me of when I'd scrape my knees up as a kid, and my mom would patch me up. You know what I'm sayin'?"
  • Combo Platter Powers: Has a large and varied set of abilities and an ability to easily get more.
  • Companion Cube: Her childhood teddy bear, Hambo, mainly because it was given to her by her father figure and best friend Simon Petrikov. It was sold to Maja the Sky Witch by her abusive boyfriend Ash, causing them to break up. She reclaims it in the episode Sky Witch, only to lose it again in an effort to help Simon say goodbye to his lost love in Betty.
  • Consistent Clothing Style: She favors a dark, muted color palette (greys, blacks, dark blues and purples, red accents), denim, and either boots or sneakers.
  • Cool Big Sis: She occasionally acts like this toward Finn.
  • Cool Old Lady: In the farmverse, though she is pretty batty.
  • Creepy Child: As a child, and spoken to her teddy bear as she was fixing it: "I'm hurting you because I love you." What really drives it home is that she's completely unfazed at the Scenery Gorn that the Mushroom War has brought.
  • Creepy Good: She may be an ally, but Finn and Jake are still terrified of her.
  • Cute Little Fangs: Though it's fairly clear that her entire mouth is full of sharp teeth.
  • Cute Monster Girl: She's even referred to as "that sexy vampire lady" in her debut episode.
  • Dark Is Not Evil: Sure, she's a Vampire Queen responsible for kicking Finn and Jake out of their house (although she does return it), but for the most part she just wants to jam on her axe and record albums with friends.
  • Daywalking Vampire: Direct sunlight can still burn or even kill Marceline, but things as minor as a shaded hat or sunscreen can protect her. Her Healing Factor can also quickly reverse minor damage from the sun, which isn't surprising considering the vamp she got the power from could totally ignore sunlight.
  • Defrosting Ice Queen: As the series progresses, Marceline becomes more open towards her friends.
  • Eerie Pale-Skinned Brunette: Refer to her page image. And yes, she can get really creepy when she wants.
  • Et Tu, Brute?: Almost everybody Marceline has ever loved has either betrayed her and/or abandoned her. Following her mother's death, she was raised by the Ice King, who became a father figure to her during the early days of the apocalypse, but he doesn't remember his past with her due to his insanity. After that, communication with her birth father is infrequent and often results in him hurting her feelings. Later, a boyfriend steals and sells her stuffed bear, the only memento she had of her days with Simon. Finally, she had a major fallout with Princess Bubblegum, who used to date in the past. As a result, she has a tendency to bottle up her emotions and drive others away before they can get close to her.
  • Extremely Protective Child: Marceline is quite protective of her Parental Substitute Simon Petrikov/Ice King, and he's one of the few characters that can bring out her softer side. In the "Stakes" miniseries, a rival vampire slams Marcy's Berserk Button by insulting Simon, and she angrily exclaims "That's the last time you toy with his heart!" before staking the vamp through the heart.
  • Family-Unfriendly Death: In the Farmworld, she is killed by the explosion caused by Finn's mayhem.
  • Felony Misdemeanor: By itself, her dad eating her fries would seem this, but with a little closer look it serves as another indication that her father never took her thoughts or feelings into consideration, and that taking something that belonged to her, which at this point happened to be something completely trivial, was the final straw.
    (singing) "Daddy, do you even love me? Well I wish you would show it, because I wouldn't know it. What kind of dad eats his daughter's fries, and won't look her in the eyes? There were tears there. If you saw them would you even care?"
    • Then we find out he ate those fries in the aftermath of the apocalypse where Marceline was scrounging around for anything edible. He's a deathless immortal, she was a starving teenager.
  • Flight: Her most used power. It's fairly rare to see her actually touch the ground.
  • Friendless Background: In "Memory of a Memory" we see a flashback of her as a child, describing her stuffed animal Hambo as her only friend; in "Marceline's Closet" she writes a song to the same effect. We later discover that she did have an Intergenerational Friendship growing up with Simon, who gave her Hambo, but that didn't end well.
  • Friendly Neighborhood Vampire: Depends how she sees you. She can be your best friend or worst enemy.
  • Fur and Loathing: The dress she wears in "Henchman" is made from a Whywolf. "Marceline's Closet" shows that she also has a large fur-lined coat, with the head and claws built into it.
  • Giant Flyer: Again, see One-Winged Angel.
  • Girl with Psycho Weapon: If she doesn't want to kill you with her powers of vampirism, she could use her demonic axe bass.
  • God Save Us from the Queen!: Played With. She's the Vampire Queen, and she can be unpleasant, but is nice mostly.
  • Goth Girls Know Magic: She's a Perky Goth with a punk rock style, and has supernatural powers as a vampire and demon.
  • Half-Human Hybrid: She's a cambion (half human, half demon) who later became vampirized, giving her a unique set of abilities.
  • Heel–Face Turn: In her original appearance, she comes in the middle of the night and kicks Finn and Jake out of their own house, leaving them out in the open trying to find a place to live. When they finally do find a place, it just so happened to have been Marceline's... and so she almost kills Finn and Jake, but in the end, gives them their house back because she forgot how much she liked the cave. Second appearance, and Finn and Jake still consider her an enemy. Finn unwillingly becomes her accomplice to her many dark deeds that all turn out Double Subverted. The last scene shows that Finn and Marceline have gained some trust for each other. Third appearance, Finn is hanging out at her house playing music with her and they spend the entire episode together, trying to get her soul-sucking father back into the Nightosphere.
  • Heroic Neutral: She's far and away the most powerful ally that Finn and Jake have, but is very difficult to motivate into helping solve a problem due to her general apathy. And in some situations, she's either outclassed by the threat (facing her father) or some supernatural rule prevents her from doing much.
  • Human Mom Nonhuman Dad: A soul-sucking demon of a father who rules the Nightosphere in contrast to her mother who is just an ordinary human.
  • I Just Want to Have Friends: Strongly implied. In 'What Was Missing', the Door Lord didn't actually steal anything from her, she just wanted to hang out with her friends and gets intensely embarrassed when this is pointed out. In 'Memory of A Memory', it's shown that she was a borderline Extreme Doormat when it came to her abusive boyfriend Ash until he sold her only fond childhood treasure for an entirely pointless reason.
    • If you don't take it as a expression of Les Yay, Marceline's song to Bubblegum can be considered an expression of this; she doesn't even remember why Bubblegum is angry at her and feels she shouldn't have to apologize, but implies she still wants to.
    • She outright admits that she hides tears because she has no friends in "Marceline's Closet". And in "I Remember You", she desperately cries while unsuccessfully trying to make Ice King remember his life as Simon and their old friendship.
  • Ill Girl: As a child. Simon has to find her chicken soup to restore her to good health.
  • I'm a Monster: The episode "Go With Me" indicated Marceline occasionally feels this way about herself, likely due to her semi-demonic heritage.
    Marceline: Oh, Yeah? No one would want to go to the movies with... (turns into giant tentacle monster) this!
    • This gets further explored in the special "Obsidian", thanks to a series of flashbacks that explains how Marceline came to view herself as a monster. After using her demonic soul-sucking powers to save her mother from a mutated wolf, she believed that she scared her mother away after she told her to leave (in reality, Marceline's mother tricked her to do so, so she wouldn't see her dying). During a conversation with her imaginary friends, she convinced herself that, the reason why everyone was afraid of her, was because she wanted them to.
  • Immortal Immaturity: She's been around for at least a thousand years, but she's really not too much more mature than Finn himself is. At times, he's even more mature than her. She acknowledges this in Stakes, and thinks she can only move on with her life if she starts aging.
  • Immortality Begins at Twenty: Zig-zagged. If she were never bitten, her demon ancestry would have just made her Long-Lived, with her aging being slowed after hitting adolescence (as seen in the Farmworld). She only fully stopped aging when she became a vampire, with the fact that she was physically in her late teens/early twenties at the time just being a coincidence.
  • Immortality Bisexuality: The series finale reveals that not only did Marceline and Bubblegum have previous romantic history, but also has them rekindling the relationship.
  • Important Haircut: Signifying her depression and wanting to grow up, Stakes cuts her Rapunzel Hair short.
  • Instrument of Murder: She turned the family axe into a bass guitar.
  • Invisibility: Uses it to sneak in on Ice King's "Fionna and Cake" reading session, and for cheap laughs in "Heat Signature". (It's apparently a vampire power... but she's in the midst of messing with Finn and Jake when she says so.) Given her personality, it's not surprising that she doesn't use it often.
  • Intergenerational Friendship: Had one with Simon Petrikov during the aftermath of the Mushroom War. Has one with Finn and Jake.
  • It Amused Me: This is her reason for everything she does, Jerkassy or not.
  • Jerk with a Heart of Gold:
    • Seemed to be a straight-up Jerkass in her introduction episode (in the "Evicted" song, she sang that she was "1000 years old and just lost track of her moral code"). "Henchman" would then reveal that she's actually a pretty cool chick who simply enjoys screwing with people but never actually aims to hurt them, and by the end of the episode she and Finn strike up a friendship.
    • By "Heat Signature" even Jake has warmed up to her, with that same episode also providing a good example of this; she pranks Finn and Jake into believing that they're vampires and fools them into doing various embarrassing things, but draws the line at her old ghost gang brutally kicking them for no reason and goes berserk when Finn and Jake are tricked into nearly jumping to their deaths.
  • "Just Joking" Justification: During her more dickheaded early days in show, she leads Finn on a massive mind scarring prank day as her minion. Though he takes it in good stride when he finds out.
  • The Lad-ette: Clearly demonstrated (in a kid-friendly way) through her willingness to fight everyone and everything, in the same way that Finn does. Not to mention several episodes clearly demonstrate her lack of appreciation for hygiene, whether it be her picking her nose, not washing her hands, or remarking that her armpits stink.
  • Last of Her Kind:
    • Although the non-canon comics show other vampires, the show eventually establishes her as the last vampire on Earth. It's revealed that she killed all of the others in order to protect what remained of humanity, and the last one made her into a vampire in the instant he was dying.
    • For much of the series, Marceline could also be considered the last living member of Pre-Mushroom War Humanity, or at least the only one who actually remembers what humanity was like. Though, this is Averted after Simon regains his memories and other Pre-Mushroom War humans are brought to Ooo like Betty Grof and Patience St. Pim.
  • Lead Bassist: Marceline's bass often accompanies her when she sings, making her a Type B.
  • Lesbian Vampire: While not a lesbian per se (she's actually bisexual) , she ends up in a relationship with PB in the series finale.
  • Like Brother and Sister: With Finn. 'Go With Me' confirms that neither of them have feelings for each other that way.
  • Living Forever Is Awesome: Of the two immortal characters, she's the one that has the most fun. Subverted in "Stakes", when she believes her lack of aging is keeping her from solving her personal problems, and tries to get it taken away.
  • Long-Lived: Originally; the Farmworld reveals that as a half-demon, her lifespan is well over 1000 years naturally, but without the added bonus of vampirism, her body and magic will vastly deteriorate into old age.
  • Looks Like Orlok: When she gets too hungry, as seen in Red Starved. She also makes her nose look more bat-like when she wants to pick it.
  • Master of None: In regards to the various vampire abilities she has acquired. While Marceline has used all of the powers she's acquired to some degree, she doesn't seem to be capable of some of the more extreme feats that the other vampires displayed, most notably The Moon's Nigh-Invulnerability and sunlight-nullifying Healing Factor, or the Vampire King's more impressive telekinetic abilities.
  • Morality Pet: Even a thousand years later, Simon/Ice King still cares about her, even if he can't remember why, and she's notably one of the few characters he's actually cared about when he believed they were hurt.
  • Ms. Fanservice: Some of her outfits consist of midriff-baring and Hartman Hipss as well as [[She's Got Legs leg showing attire.
  • Mundane Utility: She uses her powers whenever convenient.
  • Necromancer: "Corpses buried in mud that's black, from death I command you to come BACK!" She did it to throw a party.
  • Nightmare Face: Marceline can do this voluntarily and to great effect. In "Henchmen", she just does it for the reaction on Jake's face, as he is still afraid of vampires. The Adventure Time Team's portion of Frederator blog has a small collection of the faces she made throughout the episode.
  • Ninja Pirate Zombie Robot: She was already a demon/human hybrid before becoming a vampire.
  • Noble Demon: Noted by Finn in her second episode, she releases him from being her minion as it's "not as fun when they realize it."
    • She and Lumpy Space Princess raise havoc in Breakfast Princess' place, stealing her things, vandalizing the castle, and assaulting the guards, but they do draw the line at killing them, being visibly relieved when the guy they pushed through a high improvised window landed in something soft.
  • The Noseless: Like the other humanoids. Though she can morph a nose when she wants to smell something or pick it. This carries over to the Farmworld, where she appears to be the only denizen without one.
  • Not a Date: Goes to watch a movie with Finn in "Go With Me", both insisting it's not a date.
  • Not So Stoic: Under her cool and trickster-like demeanor lies a sensitive girl that will cry easily if the right buttons are pushed. (Pissing her off is still a no-no.)
  • Odd Friendship: With Finn, which doubles as an extreme form of an Intergenerational Friendship. Later on she's befriended Jake (though she likes to scare him) and appears to have had one with Bubblegum in the past, though Finn seems to have helped her and Bubblegum patch things up.
  • Official Couple: With Princess Bubblegum as of "Come Along with Me".
  • One-Winged Angel: She often employs this in a serious fight (or when she's trying to scare people), and one of the most memorable is a giant, bat-like creature.
    • In the finale, when she briefly thinks that Bubblegum was killed, she takes on the Vampire King's giant cloud ram form.
  • Our Demons Are Different: She is a half-demon, with the demon half from her father's side. Appearently, it's reponsible for her unique anatomy, such the white skin, the fangs, and the pointy ears, since she only became a vampire when she was a teenager, and young Marceline already had said traits. It also doesn't influence her morality much.
  • Our Vampires Are Different: Marceline claims that she sometimes drinks blood, but only because it's red, and she mainly "eats" shades of red, and sleeps in a normal bed instead of a coffin. Other vampires could just eat red, but they didn't want to which is why she killed them before even becoming a vampire herself. Sunlight and garlic aren't instantly fatal, but they still hurt like a mother. As long as she takes precautions not to be struck directly by sunlight (generally by wearing a sunhat or, more often, a parasol), she can be active at any time of day. All of her abilities come from vampirism except the soul-sucking power that let her absorb those powers from other vampires. There's also the fact that she was a Half-Human Hybrid with her dad being a demon, being that being a cambion vampire makes her unique.
  • Out of Focus: Does not receive as much screentime in season 6 compared to previous seasons, having only one episode featured on her ("Princess Day") along with a couple of minor appearances. Previous seasons features her at least twice per season. Season 7 reversed this and gives her much more screentime including the eight-part miniseries Stakes.
  • The Performer King: Marceline is often referenced as "Marceline the Vampire Queen" and usually found writing songs and performing them publicly on her bass. While she is no queen to vampires (having exterminated all of the other vampires centuries prior), her father is the Ruler of the Nightosphere, so the trope still technically applies.
  • Pointy Ears: Comes from being half-demon, assuming her father is an appropriate representation of demons.
  • The Quincy Punk: Slightly; she's a wild and reckless sort of person, but Ooo in general doesn't seem to find her particularily dangerous. She seems to like the aesthetic more than anything.
  • Rapunzel Hair: Just look at her; it goes down to her ankles, though she cuts it short later in the series.
  • Really 700 Years Old: She's an immortal half-demon vampire who is thousand years old at the start of the series, with her childhood (where she was just half-demon) taking place during the events of the Mushroom War.
  • Red Eyes, Take Warning: Does this when she gets upset. Usually an extremely bad sign for whomever made her upset.
  • Sad Clown: Unfortunately she sings from the soul and gets upset when she notices she's let her defenses down.
    Marceline: How can- anyone relate to me? When they cannot see what I see- My vampire eyes see... only blood red- skies. Blood red skies make tears inside that I always hide.
  • Sense Freak: When she briefly became mortal again, she gorged herself on non-red food.
  • Sole Survivor: For much of the show, Marceline could be considered the last remaining member of Pre-Mushroom War Humanity, or at least the only one left who remembers anything about them. This becomes Averted once Simon is freed from the Crown and other Pre-Mushroom War humans like Betty and Patience come to Ooo or are revived.
  • Sour Outside, Sad Inside: She drives people away out of fear of being abandoned and betrayed again.
  • Spear Counterpart: Marshall Lee. Though, because his only characterization came from when Marceline was telling a Fionna and Cake story - that is, she's describing him and how he would act - he ends up coming off to the viewer as a self-deprecating parody of her.
  • Sudden Anatomy: In "Marceline's Closet," she grows a pair of bat-like nostrils when trying to sniff out Finn and Jake.
  • Superpower Lottery: She has an enormous list of supernatural abilities. Though, it wasn't so much a lottery, as she had to earn every single one of her various vampiric powers.
  • Tank-Top Tomboy: Over half her costumes have involved tank tops, and she has all the tomboy characteristics.
  • Telekinesis: Briefly uses some on Finn in "Henchman", curling his arms so he can't interfere with her pranking. It's unclear if it's a demon or vampire power, but the affected object glows red.
  • Tentacled Terror: She has the ability to turn into a giant tentacle monster. She did it in order to dissuade Finn from asking her out before realizing that he wasn't interested in a date.
  • Tomboy and Girly Girl: Tomboy to Princess Bubblegum's Girly Girl.
  • Tomboy with a Girly Streak: She does wear dresses and fairly pretty blouses on occasion.
  • Took a Level in Kindness: While she started out as an antagonistic Troll, Marceline would become notably more considerate and friendly over time. She would later show genuine concern and even go out of her way to save Finn, Jake, and Bubblegum in a few situations.
  • Troll: Finds a lot of joy in screwing with people in general and Finn in particular, though she seems to draw her limits at actual physical harm, at least lately.
  • Tsundere: Shows quite a few signs of being one to her friends in general, and very strongly suggested to be one in "What Was Missing".
  • The Undead: She is a vampire, after all.
  • Unlimited Wardrobe: Averted. How many outfits has she worn now? Notably, since she had a different outfit for each of her appearances, she was the first character to avert Limited Wardrobe. Considering that she's over a thousand years old, it's probably not that weird to see her having many clothes.
  • Unscrupulous Hero: She sometimes saves the day only because she wants to, and screwing with an evil person like herself is more fun than screwing mortals over.
  • Vampire Hickey: Marceline has two noticeable bite marks on her neck, giving the indication that she was turned some time in the past. The "Stakes" mini-series eventually reveals in a flashback, to when she was just a common cambrion half-demon (human mother, demon father), that this was from the vampire king who bit and turned her just as she was staking him. In the present day of the story, when she regains the last of his vampire power, the vampire essence puts the marks back on her neck as she's absorbing the power.
  • Vampire Hunter: She used to hunt vampires to keep her human friend (later friends) safe. She personally would have wiped them out if not for the last one turning her as he died.
  • Vampire Monarch: Specifically, she's the Vampire Queen. There aren't any other vampires left to rule over (she refuses to turn anyone as she rarely drinks blood, instead getting by by draining out the color red from objects), but her presence at the meeting of Ooo royalty suggests that her position is at least somewhat meaningful.
  • Vegetarian Vampire: She'll drink blood if she's desperate, but she mostly just drains the color from red objects. Sometimes the objects are fine afterwards, sometimes they seem shriveled up.
  • Violently Protective Girlfriend: Thinking Golb's abomination murdered Bubblegum, she cries her name before turning into Vampire King's cloudy form and nearly tearing it to shreds.
  • Visual Pun: Her bass is an axe.
  • Voluntary Shapeshifting: Has a habit of going from her cute normal form to very grotesque monster forms and back again at the drop of a hat. Her second episode really plays this up.
  • Weakened by the Light: Though, oddly, only by direct sunlight. She'd be just fine on a sunny day with as little as a large hat or parasol, though she does mention that it is painful in a very minor way. It appears to burn quite severely - barely a second's exposure results in a bunch of painful-looking boils (that she can heal away, but still).
  • "Well Done, Daughter!" Girl: She wishes for the approval and attention of her neglectful father, as she isn't secure if he even loves her. He does, but is not good at showing it.
  • Who Wants to Live Forever?: Marceline has occasionally griped about this, with this serving as the catalyst for the Stakes miniseries. Though her big complaint is less about being long-lived and moreso the eternal youth, as her vampire nature has trapped her in a state of arrested development, mentally unable to truly mature as a person due to being physically in her late teens forever.
    Marceline: (singing) They don't know what it's like to live forever and forget who they even are...
  • Wound That Will Not Heal: She has two bite marks on her neck from the bite that turned her. They go away when her vampirism is removed.
  • You Kill It, You Bought It: She became the Vampire Queen by killing the Vampire King.
  • Your Soul is Mine!: She inherited the ability to suck out a person's soul from her father. Besides a longer lifespan, she's said it's the only special ability she has from being half-demon.

    Ice King
Click here to see him as Simon Petrikov. 
Voiced by: John Kassir (2006 pilot), Tom Kenny (the series)

An unruly monarch from the Ice Kingdom. Once a close friend or even a father-figure of Marceline's, he's spent years pestering her. She says that she tolerates his presence because she loves him unconditionally, and remains one of the few characters to bestow compassion upon him to date. In truth, these are but the remnants of a pre-apocalypse professor of archaeology and antique enthusiast once named Simon Petrikov, before he was driven insane and transformed by the arcane forces of ice and snow within a crown he bought. The subsequent bouts of madness estranged him from his beloved fiance, Betty, and his nickname for her, "princess", was warped by time and insanity into his compulsion to kidnap and marry princesses in present day Land of Ooo.

  • Abhorrent Admirer: To the extreme, in both the romantic and platonic senses.
  • Adipose Rex: Subverted. While he looks extremely stout, it's actually just an optical illusion caused by his beard and abnormally puffy robe. He's actually extremely skinny, bordering on emaciation. Season 4 and 5, however, have shown that he's gained some weight.
  • Adult Fear: Going insane and feeling your mind slip away, in addition to driving away your loved ones. And the only thing that can protect them is what's driving you crazy to begin with.
    • Simon was also afraid of leaving little Marcy all alone again if and when he completely lost his mind.
    • Having a small child in your care coughing and feverish in dangerous conditions with no available medicine or nutrients.
  • Ambiguous Disorder: His forgetfulness, carelessness and ditzy behavior and what the crown did to him are reminiscent of someone with dementia. This is more obvious with his interactions with Marceline.
  • Ambiguously Brown: Before being cursed with the Crown.
  • Amulet of Concentrated Awesome: If he loses his crown, he loses all his powers. Seems he needed to keep it on his person (if not actually wear it) as Simon, in order to stay alive.
  • And I Must Scream: Somewhere deep within the ball of insanity that is Ice King, Simon's aware of what he is... or at least, when he went back to normal, he was aware. And terrified of becoming Ice King again.
  • And Now You Must Marry Me: His entire purpose in life. He just wants to be Happily Married! Obviously kidnapping princesses and marrying them by force is the only way to make that beautiful dream happen!
  • And Show It to You: It turns out that Ricardio is the result of Ice King accidentally doing this to himself as the result of a botched spell.
  • Anti-Villain: Somewhere between Type II and Type IV. He usually has no idea what he's doing is wrong, but is just too crazy to notice due to his crown.
  • Apocalyptic Log: A series of video tapes show him going from a normal man named Simon, to the Ice King he is now.
  • Apologetic Attacker: Somewhat. In the episode "I Remember You", his notes (which he mistakes for lyrics) are, to put simply, him apologizing in advance for what he does.
  • Arch-Enemy: Zigzagged with Finn: while he's certainly Finn's most frequently-encountered foe by far, there's very little hate or fear between them: Finn considers the Ice King little more than a nuisance, and Ice King actually considers Finn a friend.
  • Artifact of Doom: His crown is revealed to be the cause of his insanity and why he's the way he is. Also appears to have its own will, which it tries to impose on its wearer.
  • Ax-Crazy: As the Ice King, he's homicidal, explosive and mentally unstable.
  • Backstory Horror: A surprisingly sinister revelation in the last few minutes of the lighthearted "Holly Jolly Secrets" simultaneously plays for drama the Laughably Evil and Cloudcuckoolander tropes he so happily personified. The transformation of a perfectly normal human-being into a deranged cartoon character was chilling, to say the least. Later episodes show that the process was slow and painful, driving away his fiancee Betty and a young Marceline through sheer insanity.
  • Badass Bookworm: He was definitely this. In Betty, within minutes of awakening he knocks out Ash in one punch because he needs to use his flying carpet. He also manages to whip up a machine that opens a time portal in the time it takes Marceline, Finn, and Jake to get to the Ice Kingdom. (Although it's possible he was working on it during his previous periods of sanity.)
  • Bandage Babe: "What is Life?" demonstrates that his underwear is just some gauze.
  • Barefoot Loon: He's always barefoot and is quite possibly the craziest character in the show.
  • Beat Still, My Heart: Ricardio's existence.
  • Big Bad: In season 1, he can be considered one of the main antagonists of the show, constantly stealing princesses so he can marry them. After that he generally becomes a Harmless Villain, with The Lich taking over as the show's Big Bad. However, he worsens sometimes.
  • Blank White Eyes: A side effect of the crown, they're his Wizard Eyes, allowing him to see the strange beings of the Spirit Realm, which probably took a toll on his sanity.
  • Blessed with Suck: As we learn in "Holly Jolly Secrets", his ice powers helped him survive the nuclear winter, but at the cost of his sanity and humanity, and he outlived the only woman he ever loved. Or so he thought...
    • He also sees crazy things (later revealed to be the very real and very creepy denizens of the spirit realm) with his "Wizard Eyes" all the time.
  • Blow You Away: He commands arctic winds to chill and freeze things and it seems to accompany his flying.
  • Body Horror:
    • He temporarily removed his own heart. And gave it life as Ricardio. On another note, during the process that turned him into the Ice King, his skin turned pale blue and appeared frostbitten when his body temperature had dropped to only 80 degrees (F). Presumably he got even colder, as he's fine going barefoot in the snow.
    • Taken Up to Eleven in "Lady and Peebles" when Ricardio makes a body for himself using tissue and broken bones he pilfered from the Ice King. While still inside the Ice King's body.
  • Butt-Monkey: Ice King is very unlucky, constantly either getting hurt or having something bad happen to him.
  • By the Eyes of the Blind: The crown gave him the ability to hear and see spirits.
  • Cerebus Retcon: Everything about him in "Holly Jolly Secrets."
  • Characterization Marches On: Was a more traditional villain in the original short, being much more of a threat (actually physically engaging Finn/Pen, for one) and playing typical villain tropes like Evil Laugh and Sesquipedalian Loquaciousness straight. There was scarcely a hint of the harmless Cloud Cuckoolander he would become in the series.
    • He's also unusually nasty by later standards in "When Wedding Bells Thaw", in which he comes close to mind-controlling Old Lady Princess into marrying him.
    • And then we found out about his past, making him a Tragic Villain...
  • Classical Anti-Hero: A Chaotic Stupid example.
  • Cloud Cuckoolander: Ice King has odd plans, odd mannerisums and generally doesn't make sense. This is because the Ice Crown drove him nuts. It's Played for Drama during a flashback episode that shows Simon Petrikov was terrified of losing his mind. The Ice King is less than a shadow of the dignified antiquarian he once was, no longer caring that he's gone insane. "I Remember You" suggests that he's not even aware that he's even gone insane, even with the truth from his own words being sung right in front of him. However it's kind of implied that Simon was already a bit of a Cloudcuckoolander, he just wasn't insane. For example, he compares being the Ice King to "living with eternal diaper butt".
  • Continuity Nod: After his back story is revealed several characters refer to the Ice King by his real first name.
    • In "Beyond This Earthly Realm.
    Finn: Ice King? Ice King! Where'd you go, Simon?
    • And again in "Lady & Peebles".
      Ricardio: Silence, Simon!
    • And in "I Remember You":
      Marceline: You don't remember anything, do you, Simon?!
  • Cool Old Guy: Sort of. He has a wacky sense of humor, plays on a drum kit, and has a bunch of ninja stuff.
  • The Corruption: In "Simon And Marcy", it's shown that Simon is able to resist the crown's influence when he's not actually wearing it, but dangerous circumstances forced him to use its power more often than not. Eventually he becomes the Ice King permanently.
  • Crouching Moron, Hidden Badass: Despite being an extremely out-there old man, Ice King has shown that he can be extremely efficient with his magic when the situation calls for it.
  • Crown of Power: His crown is the source of his power over ice, and is also the source of his insanity, as before the crown corrupted him, he was normal, sane human being.
  • Dark and Troubled Past: Much like Lemongrab, he has had one of the most depressing pasts of any character on the show, stretching back an entire millennium to when he was a perfectly normal, happy young man. He survived the Mushroom War and a post-apocalyptic ruin of world, and became a temporary guardian to a young girl, but lost it all along the way to insanity and senility.
  • A Day in the Limelight: "Hitman", "Princess Monster Bride", "Party's Over Isla de Señorita", and "Friends Forever" gives him more focus compared to other episodes. "Holly Jolly Secrets" also involves his Origin Story, among other things.
  • Death Seeker: When he is temporarily reverted to Simon Petrikov, he would rather die than go back to being the Ice King. Betty talks him out of it, saying that she will find him a cure.
  • De-Power: In the finale, as a side effect of being inside GOLB, Ice King gets reverted back to Simon, and unlike in "Betty", it sticks.
  • Desperately Craves Affection: His surface-level motivation for wanting to kidnap a Princess - he just wants to be loved. The heart of the matter, though, is considerably more complex and spoiler-laden.
  • Determinator: Ice King doesn't give up easily on much. He carried it over from his former self Simon Petrikov, who fought long and hard to try and keep his sanity, and while we know he eventually loses the battle, seeing him trying, and succeeding, at holding onto his mind while using the power of the crown while singing the saddest rendition of the theme song to Cheers ever is amazing.
  • Dirty Old Man: Justified, sort of; he goes after young princesses because his lost love Betty was young when he last saw her, and his own immortality and insanity began when he was young (albeit artificially aged). Unjustified with him wanting to date Fionna. Granted, he doesn't seem to think he's old. Moreover, he won't go after princesses under 18, as seen in "Mortal Recoil" when he has no interest in Bubblegum when she's reverted to a 13-year-old.
  • Distaff Counterpart: Ice Queen, who he himself created for his gender-swapped fanfiction.
  • Does Not Like Shoes: Even if he's standing in snow, he won't be wearing any sort of footwear.
  • Does This Remind You of Anything?: The ice crown's corruption of his mind has often been compared to alcoholism, Alzheimer's disease and/or dementia. His "Wizard Eyes" are also reminiscent of schizophrenia.
  • Dying as Yourself: His goal when the Ice Crown's magic is temporarily removed, reverting him to Simon Petrikov and revoking his immortality. Unfortunately for him, Betty won't let it happen.
  • Earn Your Happy Ending: At the end of "Come Along With Me", Simon is completely freed from the corrupting influence of the Ice Crown, and is able to live out the rest of his life in peace.
    • Even better in the Marcy and Simon comic, He gets Betty back thanks to Hunson inadvertently using his soul sucking powers to separate Betty from GOLB and managing to knock it out and leave it stuck in the dimension Betty took it to. Finally allowing the two lovers to be reunited.
  • Elderly Immortal: He is immortal in terms of aging, though whether he can be killed is still unclear.
    • When he's briefly reverted back to Simon in "Betty", Death shows up to taunt him that he'll be the Ice King "'Til the sun blows up". So it seems likely that he is immortal for any reasonable definition of the term.
    • His elderly appearance is also a side effect of the crown, as the crown slowly turns its wearer into Evergreen clones; If he completes his transformation at the same time Marceline is turned into a vampire, Simon's biological age would have stayed at 57.
  • Elemental Powers: His crown provides him with amazing control over ice and snow, possibly augmented by Ice Ninja prowess.
  • Enemy Mine: Teams up with Finn to defeat the Lich.
    • This may have been his motivation in "The Cooler", given how badly the Ice Kingdom was affected by just Flame Princess.
  • Enemy Summoner: As seen in "Prisoners of Love".
  • Even Evil Has Standards: Decides to stop pursuing Princess Bubblegum after it's pointed out that he's old and she's been turned into a thirteen year old. In "Hitman", he also draws the line when Scorcher tries to kill Finn and Jake instead of literally hitting them.
  • Evil Is Deathly Cold: While not really evil, he is the Ice King.
  • Evil Old Folks: Played with. More insane than anything.
  • Evil Overlord: Has the spiky crown, Faceless Goons (Penguins, Yeti and Type I Snowlems), magic, etc. Every typical aspect of the trope is present, so it is of course totally subverted. He isn't really "evil" for one, and it's often more like he just has the biggest house in the Ice Kingdom.
  • Evil Plan: Kidnapping princesses because the ice crown drove him insane.
  • Expy: The idea for him came from the characteristics of Dr. Two-Brains from WordGirl. They're both "evil" older men voiced by Tom Kenny who started out as intellectuals who got their minds messed with by an outside force that gave them an obsession for something in the process. They also both used to have a mentor relationship with a heroine from their respective shows that still resurfaces from time to time.
  • Fallen Hero: Though not completely fallen, since some part of mind is still fighting the Crown (it's just buried so deep that not even he is aware of it).
  • Flight: Via his beard.
  • The Fog of Ages: He's been alive since before the Mushroom War, but has only the vaguest memory of times before the series. He can't even remember his own name, let alone his former life.
  • Freudian Excuse: His desire to kidnap princesses is revealed to be a degenerated desire to see his fiance Betty again. Whom he referred to as "his princess".
  • Friendly Enemy: From Season 3 onwards. Noted to not usually be a "serious threat" in Season 4, so maybe he's improving a little?
    • From Earth & Water to the end of Play Date he lived with Finn and Jake while his kingdom was rebuilt.
  • The Friend Nobody Likes: Seems to be becoming this in Season 5. The others invite him to things and put up with his annoying behavior out of pity. Marceline seems to be the only one who genuinely likes him, and even then it takes her a while to want him around her again, as up until "I Remember You" it was difficult for her to even be in the same room with the guy. It seems that doing so brought back...unpleasant memories for her.
  • From Nobody to Nightmare: Was just a normal human with aspirations to become a certified and respected antiquarian, until he found the crown.
  • Future Loser: Mushroom War era Simon was a certified Badass. Ice King, not so much.
  • Gag Nose: Somewhat odd, given he didn't have one as a human.
  • Hair Wings: He can fly using his beard.
  • Harmless Freezing: Applies anytime he freezes something living, which is a little weird given his insanity.
    • It's established that, when he was still oscillating between Simon and the Ice King, he wasn't always so lenient - we see him unnecessarily freeze a deer to death by asphyxiation. He's noticeably holding back in the present day, though whether he does so consciously or not is debatable.
  • Hearing Voices: The insane variation; caused by his crown. That's not figurative, by the way - the crown is established as actually talking/whispering to its user. He doesn't mention them at all in the present day, so he may be tuning them out. Or they don't bother talking to him anymore because he's already a crazy ice wizard. Or he still hears them, but no longer makes any distinction between the voices and his own thoughts, so he doesn't see any point in mentioning them.
  • Heel–Face Turn: Season 3 onwards. He sometimes causes problems, but almost never has any malice to it. It later reached a point where Finn and Jake would have little problem with him hanging out with them
  • Her Code Name Was "Mary Sue": Writes himself as one in the "Fionna and Cake" universe. He saves Fionna and Cake from Dr. Prince just by reasoning with him, and the duo automatically adore him and become best friends with him for no good reason.
  • Hero of Another Story: As Simon Petrikov during the aftermath of the Mushroom War where he was Marceline's Parental Substitute.
  • Heroic Sacrifice: Farmworld Ice King was able to stop the bomb that would create the Lich, but in doing so was crushed underneath the frozen bomb]
    • Played for Laughs in "The Wand", where Finn and Jack direct him to sacrifice himself to stop the wand and he happily does so.
  • Heroic Willpower: The season 5 premiere implies that a normal person would fall into complete insanity in a few hours while wearing the crown, and freeze the world. Not only was Simon able to retain his sanity for long periods of time inbetween bouts of insanity, even 1000 years later as the insane Ice King he still has not fallen to the crown's influence enough as to try to do it. He may be repressing the worst of the crown, or it may even have given up.
  • Hidden Depths: Has more than the rest of the cast combined, thanks to his age and hobbies.
    • Turns out, he can survive on a desert island (actually Island Lady) without using his crown at all. (It's not too surprising when you know his history, but that he can call it up at all comes out of left field...)
  • An Ice Person: As may be obvious. Knowing "The secrets of ice and snow", he is powerful enough to freeze the entire world, but has refrained from doing so so far.
  • I Just Want to Be Loved: He said so himself in "I Remember You".
  • I Just Want to Have Friends: While he started out just kidnapping princesses, as the series goes on, it becomes abundantly clear that he's incredibly lonely and he just wants someone to like him. This is especially seen in how he regularly tries to hang out with Finn and Jake, despite their rocky relationship.
  • I Was Quite the Looker: Simon was relatively handsome; at least enough to be depicted with the same Generic Cuteness as most other characters (as opposed to Ice King's Gonk big nose and aged appearance).
    • The Ice King himself however doesn't seem to think so- he's too embarrassed to let others find out that he used to wear glasses.
    • The glasses get mentioned again, The Empress (a vampire whom he has an unelaborated history with) tells Marceline:
      Empress: He used to have more of a Silver Fox thing going on, with his hair and his cute glasses.
  • Ignored Epiphany: When he gets knocked out while fighting Finn, the Cosmic Owl appears and attempts to tell him he's insane. His response is to call the Cosmic Owl a big nerd, after which he is tickled into consciousness by penguins.
  • Immortality Begins at Twenty: A variation; the crown artificially aged Simon rapidly, but thereafter he doesn't seem to have changed much over the course of the hundreds of years he's been alive.
  • Immortality Inducer: The crown has kept him alive for a very long time. Unfortunately, it's also driven him insane and No Immortal Inertia is in effect.
  • Ineffectual Sympathetic Villain: He generally comes across this way, to the point that it is often hard to consider him a real villain, or even an Anti-Villain. The impression is helped by an apparent unwillingness to take the gloves off unless his life is on the line (something only forced by the Party God and Flame Princess, to date), and even then he holds back some.
  • The Insomniac: Implied in "The Eyes".
  • Jerk with a Heart of Gold: Particularly after Took a Level in Kindness. Despite being temperamental and a bit self-centered, he's actually a nice guy.
  • Large Ham: Simon can be see hamming it up a little to keep Marceline's spirits up as well.
  • Lean and Mean: Subverted. While his large robe gives him the appearance of a large man, he is actually exceptionally skinny (to the point of emaciation) most of the time. However, Ice King is more of an Ineffectual Sympathetic Villain than evil.
  • Literal-Minded: Hires a hitman against Finn and Jake, thinking he is literally going to hit them, not kill them!
  • Logical Weakness: He can't use his powers properly in high temperatures.
  • Loss of Identity: Due to his insanity, he can't even remember who he once was. He's aware that he has a "tragic backstory", but in "I Remember You" he never seems to make the connection that the "lyrics" he wrote are really just his journal, and in "Simon and Marcy" he apparently never realizes that "Simon" in the story Marceline is telling is him (or, for that matter, that "Marcy" is her).
  • Love Hungry: In "I Remember You," he quite literally yells "love me! Love me! Love me!"
  • Magical Barefooter: He is an ice wizard and he never wears any footwear.
  • Meaningful Name: His heart's name is Ricardio.
    • His true name is Simon Petrikov. Simon being derived from the Hebrew name "Shimon", which means "He who listens". "Petri" means frozen.
  • The Men First: When Flame Princess destroys the Ice Kingdom, the Ice King pleads Finn to save Gunther. Subverted immediately afterward ... as Finn runs off to do so, Ice King can be heard in the background clarifying: "... I meant, after you save me."
  • Neutral Evil: In-universe-assigned alignment in the comic series. He's really either True if not Chaotic Neutral.
  • Nice Guy: As Simon, he is a kind soft-spoken man, who loved his fiancée deeply and took good care of Marceline when she was a little girl.
  • Ninja: He has a collection of ice kunai, shurikens, and a book on ice-themed ninjutsu.
  • No Immortal Inertia: As revealed in "Betty". When the Ice Crown is depowered, Simon is revealed to be dying because, as he puts it, "I'm old."
  • No Social Skills: He does have them, if you want to be precise, but even on a good day he misuses them.
  • Not Evil, Just Misunderstood: Or mental, to be precise.
  • Nothing but Skin and Bones: The Ice King is actually very skinny under his robe, though he sometimes works out and consequently buffs up a little..
  • Not-So-Harmless Villain: There's a trend of following every episode where he's deeply tragic with an episode that reminds the audience that he's dangerous. After "Holly Jolly Secrets" comes "Princess Monster Wife", where he mutilates the princesses to create his own, and after "Simon and Marcy" comes "A Glitch Is A Glitch", where he creates a computer virus to delete everybody except him and Princess Bubblegum.
  • Papa Wolf: It's not a good idea to endanger little Marceline when she's with Simon.
  • Parental Substitute: Simon was this to Marceline, in the aftermath of the Mushroom War.
  • Person of Mass Destruction: On the tapes chronicling Simon's descent into Ice Wizardry, it is shown that the initial transformation was accompanied by the rapid formation of an extremely violent blizzard. It's also possible that this is instead the result of a nuclear winter, presumably from the "Mushroom War," though that would be quite a coincidence.
    • Muddying the waters even further, the alternate universe shows that the crown can, without a live host, freeze the entire world for 400 years. The aforementioned blizzard was likely a subconscious reflection of that. However, Ice King himself never consciously uses his powers this way.
    • While the Ice Kingdom currently covers only a small part of Ooo centered on his cave, there are fjords and what appear to be moraine islands around the entire island.
    • His dandruff is toxic enough to cause a nigh-lethal pandemic.
    • He is capable of depowering the Fire Kingdom's heat source if necessary.
  • Power Born of Madness: The crown granted him ice powers at the cost of his sanity.
  • Pre-Insanity Reveal: The Ice King was a historian named Simon Petrikov until he put on the Ice Crown, which gave him ice powers and immortality but made him slowly lose his mind. This has been a real Tear Jerker throughout the series.
  • Prehensile Hair: A secondary power granted by the crown. He can fly with his beard, and he's got no way of flying without it.
  • Really 700 Years Old: He was a part of pre-fall mankind so this makes him the oldest member of the regular cast. In "Simon and Marcy", set 996 years earlier, he mentions he is 47, making him 1043.
  • Redemption Promotion: While he hasn't completely pulled a Heel–Face Turn yet, he is far more effective when helping Finn and Jake than fighting them. He even froze the Lich solid after everything else had failed to beat him.
  • Rule 63: In-universe, he's the creator of the Fionna and Cake world. He initially refers to it as fan fiction, but later on appears to believe - or be trying to, anyway - that they exist somewhere.
  • Sanity Slippage: The crown causes this to happen to him, progressively warping him into the Ice King.
    • Being harassed 24/7 by the spirits in his castle (that only he can see, thanks to his wizard eyes) probably hasn't helped any, either.
  • Saying Sound Effects Out Loud: Likes to vocalize the "Zap!" sound his ice powers make.
  • Sesquipedalian Loquaciousness: Displays this trait a few times in the original short ("FOUL AND NOISOME WHELP!"). It's all but gone by the start of the actual series.
  • "Shaggy Dog" Story: His backstory's littered with them. In "Simon and Marcy", it was shown that at some point he began to have control over the crown and keep a hold on his sense of self, and the flashback ends on a hopeful note. This turned out to not be the case. In addition to that, the flashback shows him trying to save Marceline from her fever, but ends with the miracle cure of him feeding her chicken soup, being deluded enough to think that's all he needed to do (and providing the first hint of his intense psychoses) - though, between Marceline's biology and the fact that she was telling this story, the truth isn't totally clear.
  • Shock and Awe: Uses blue lightning a lot ("Zap"), though it usually just freezes stuff.
  • Shout-Out: Apparently Simon was a fan of Cheers.
  • Silver Fox: Thinks he's this, though at most he's Ugly Cute. He seemed to count mid-corruption though, if the Empress is any indication
  • The So-Called Coward: While he's been shown to be easily horrified by Eldritch Abominations, and Word of God stated that he'd run from The Lich, he actually assisted Finn against him willingly to save Princess Bubblegum.
  • Squishy Wizard: Gets easily smacked down by Finn every time the two come into direct physical contact.
  • Stalker Without a Crush: On top of princesses, he often stalks Finn and Jake.
  • Starter Villain Stays: Sort of; he was never that villainous and semi-reforms into an Anti-Hero, but he was the first actual villain we see Finn fight both in the main series and in the original pilot. Thanks to his frenemy dynamic with Finn and Jake and importance to the series' growing lore he remains an important character long after he's no longer considered a villain.
  • Survival Mantra: When Simon put on the crown to protect Marceline, he used the theme from Cheers to keep himself sane. Though eventually, he eventually loses what's left of his sanity.
    • Also, a particularly tragic example as they could've used any sitcom theme song, but the theme to Cheers specifically is about wanting to go to a place where you have friends who understand your problems, on top of the well-known, "where everybody knows your name" line. Poor Guy.
  • Sympathy for the Devil: The Ooo version of Christmas was created by Finn and Jake solely due to this trope.
  • Tragic Ice Character: In "Holly Jolly Secrets" it's revealed that he was an archaeologist named Simon Petrikov who found the crown in northern Scandinavia, and putting it on made him age rapidly and made his heart cold, also causing him to go insane and lose the love of his life.
  • Tritagonist: Of the Elements miniseries and arguably of the entire show as his true identity as Simon is one of the most important storylines in the show.
  • Token Evil Teammate: Starting with Season 3, when he becomes more sympathetic and other, more villainous villains start showing up. This is especially prevalent when the other characters start including him more.
  • Took a Level in Kindness: In "Hitman" when he saved Finn and Jake's lives three times. As a whole, from Season 3 onward, Ice King acts less antagonistic towards other. It would get to the point where the other characters would grow to tolerate him enough to let him hang out with them.
  • Tragic Villain: In a pre-apocalypse Earth, an intelligent, mild mannered antique dealer named Simon Petrikov procured an ancient magic Scandinavian crown. After putting it on in jest, the Crown seized his mind and began altering his body, giving him power over ice. The process, the constant spectres and visions drove him utterly, completely mad, into his present state. The Ice King no longer seems to understand what's happened to him.
  • Trauma Conga Line: His backstory before becoming the Ice King is one long list of tragedies. He ends up going berserk from putting on a crown he didn't know was cursed, drove the women he loved away (she actually went to the future), had to raise a little girl in fear of losing his mind before giving her away to protect her all while the end of the world is happening around him. It's a wonder he was able to stay sane as long as he did, much less against a crown making him crazy.
  • Unskilled, but Strong: His insanity makes him dumber than a post and unable to defend himself against true threats, but as "Frost and Fire" proved, he is way more powerful than he seems.
  • Unwitting Instigator of Doom: In "Mortal Folly", his pestering of Finn and Jake for their approval to court Princess Bubblegum ruins their best shot at destroying the Lich, who after regaining his power via the Well of Power, destroys the Gauntlet once used to destroy him that Finn himself was about to use. After the Lich is destroyed, the Ice King screws up again by dropping the Princess into the well, which results in the latter being possessed by the Lich, and later, being reduced to a 13-year-old after pieces of her are still missing. Which results in Earl of Lemongrab dropping in to assume a tyrannical rule over the Candy Kingdom, which forces Bubblegum to return to her 18-year old form and blow off Finn, eventually leading to Finn meeting Flame Princess. Whew. At least the Lemongrab part lasted only one episode.
    • He has also been revealed to be the original discoverer of the Enchiridion, a book which holds great importance to The Lich.
    • He is also responsible for Finn losing his demon sword.
  • Villainous Rescue: Assists Finn and Jake against The Lich to save Princess Bubblegum.
  • Villainous Friendship: Gunter the penguin is probably his best friend.
  • Walking Spoiler: It's hard to talk about the Ice King without spoiling his backstory or important aspects of the story's backstory, especially in later seasons where it's brought up more often.
  • Was Once a Man: He used to be a (human) artifact collector named Simon Petrikov, then he started wearing his crown, which drove him insane and gave him powers over ice.
  • Weak, but Skilled: As Simon, he may not have access to all of the powers the Crown gives him, but he is much more competent than his icy counterpart.
  • Weaksauce Weakness: Losing his beard leaves him flightless and losing his crown removes all his powers. He is also unable to use his ice powers in high temperature environments (along the lines of a steam room or sauna), though can apparently still fly in tropical ones.
  • White Hair, Black Heart: ...well, he's got the white hair, anyway. His heart is also Ricardio, so there's that too, but the Ice King himself comes off as more neutral than evil.
  • Willfully Weak: The Ice Crown gives him enough power to freeze an entire planet for centuries and create entire armies of snow-creatures, but he almost never uses anything close to his full potential. Presumably, whatever remains of Simon keeps his deranged self from tapping into his full powers - we see him cut loose twice in the present day, and both times his life was on the line.
  • Wistful Amnesia: He may not remember, or be capable of being reminded, of his past, but on some level he still remembers enough to drive him to kidnap princesses out of a desire for Betty, and bug Marceline out of the knowledge that she's important to him, even if he can't remember why.
    • Simon reveals this may work both ways. When his sanity was restored in "Betty" he describes his memories of the Ice King as dream-like impressions.
  • With Great Power Comes Great Insanity: Yep, powerful and crazy. And not only was he not always either of those, he achieved both conditions at the same time by the same process.
  • Wizard Beard: A functional one. He uses it to fly.
  • Woobie, Destroyer of Worlds: If more likely to freeze them.
  • Yandere: A male example.
  • Younger Than They Look: Initially the crown aged him faster among other things, looking like an old man despite being in his forties. Though once it was complete he stopped aging and is MUCH older than he looks.


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