Characters / Adventure Time: Antagonists and Enemies

Adventure Time Main Character Index
Main Characters (Ice King) | Antagonists and Enemies | Land of Ooo (The Candy Kingdom | Other Kingdoms) | Other Characters | Multiverse Characters

The antagonists and enemies of Adventure Time.

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Season 1

King Worm

Voiced by: Erik Estrada

A giant worm that absorbs one's life force through their dreams.

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• Body Horror: Nightmares are poisonous for him. When Finn opens his Vault to force him to stop, the Worm King ends up horrifically withered and with flaking and crumbling skin.
• Dream Weaver: His bread and butter.
• Early-Bird Cameo: Showed up at the end of Evicted in the first season before getting his own episode in season 4.
• A Glitch in the Matrix: Has a great power into putting people in their dreams, but said dreams tend to be very off to keep his target prisoner.
• Lotus-Eater Machine: He is one. He tries to put his victims into a nice or normal setting while he sucks their life energy.
• Poke the Poodle: In his first appearance, he hypnotizes Finn and Jake to hug him.

Ricardio

Voiced by: George Takei

A brainy creature resembling a walking, talking heart. He's actually the Ice King's heart, granted sentience by a love spell gone wrong.

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• And Now You Must Marry Me: In "Lady and Peebles", he tells Princess Bubblegum that he wants to be "united as man and wife" with her.
• Art Evolution: Compare his appearance◊ in season 1's "Ricardio the Heart Guy" to his return◊ in season 4's "Lady and Peebles".
• Asshole Victim: He gets zero sympathy from the audience when Bubblegum finally wrecks him.
• Beat Still, My Heart: His existence in a nutshell.
• Big Ol' Eyebrows: Has these despite being an internal organ.
• Break the Haughty: Princess Bubblegum thoroughly wrecks him in their fight in "Lady and Peebles".
• The Bus Came Back: Returns in the final season as part of Gumbald's army.
• Evil Counterpart: To the Ice King. Both want Princess Bubblegum and are antagonists, but the Ice King is a sympathetic Ineffectual Sympathetic Villain while Ricardio is an unsympathetic creep who tries to take her heart out.
• Evil Is Visceral: He's a living heart, for starters.
• Evil Sounds Deep: Given who he's voiced by, it's to be expected.
• Eviler than Thou: He's eviler than the Ice King. Granted, it isn't that hard, but he's still pretty scary.
• Faux Affably Evil: Puts up a polite front, but is anything but.
• Feigning Intelligence:
  • He's not as smart as he likes to think. This is pointed out by Princess Bubblegum when he holds her hostage:
    Bubblegum: I feel like a big idiot for not believing you. He was just so engaging. Though his knowledge on planetoids is actually pretty weak...
  • And again when he reappears in "Lady and Peebles".
    Bubblegum: You thought we were intellectual equals!?
  • In "Lady and Peebles", Princess Bubblegum lampshades the poorly thought-out design of his new body.
    Bubblegum: This body you designed is self-congratulatory garbage! See, I know a thing or two about building a body out of biomass, and you don't leave your heart exposed!
• Glass Cannon: His new body is strong enough to tie Lady Rainicorn in a knot, but his soft spots were still exposed.
• Gonk: His face is disturbingly realistic.
• Gross-Up Close-Up: A particularly memorable example of this trope when he reveals his plans:
  Ricardio: Now I'm going to cut out Princess Bubblegum's heart [close up◊] and make out with it.
  • Happens again in "Lady & Peebles". Might want to change your pants afterward◊.
• Hate Sink: Easily one of the most despicable characters in the series. Unlike other redeemed villains such as Ice King, Lemongrab or Magic Man, his villainy is not the product of a tragic backstory. He's just an utter asshole without redeeming traits.
• Karma Houdini: One of the few villains in the series whose whereabouts is completely unknown. In "Come Along With Me", he escapes the war against GOLB. He later appears in "Together Again" as a resident of the dead worlds, implying that he died of old age.
• Nonstandard Character Design: Has a more detailed face than other characters.
• Punny Name: Get it? Cardio.
• Smug Snake: He is Feigning Intelligence, as detailed above.
• The Sociopath: Ricardio meets all the criteria of a true sociopath. In his few appearances, we can note that he has exceptional superficial charm, is deeply obsessed with the Princess, and would break any ethical or moral standards to get closer to his targets. It doesn't help the fact that his character is very subjective to sociopaths who are sexual predators.
• Vile Villain, Saccharine Show: Ricardio is not only a blood covered giant organ with a scary looking face and hideous biomechanical limbs, he's also the closest thing to a rapist they could get away with having in a kid's show.
• Villain Team-Up: With Gumbald in "Gumbaldia".
• We Will Meet Again: And he made good on his word come "Lady and Peebles".
• What Happened to the Mouse?: The last time we see him alive, he escapes the war against GOLB, so his final fate was originally unknown. In "Together Again" however, he was shown to be among the residents of the dead worlds.
• Wicked Heart Symbol: He's an actual red heart with a face, arms, and legs. He manipulates Princess Bubblegum with the intention of cutting out her heart.
• Wrong Genre Savvy: When building his new body, he failed to realize a major flaw: leaving the heart exposed.

The Squirrel

Voiced by: Jeremy Shada

A red squirrel who first appears in "The Duke", harboring a vendetta against Jake for not printing his letters in his newspaper column "Begs the Question".

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• Ax-Crazy: Becomes more and more of this in every episode he appears in.
• Face–Heel Turn: In "Gumbaldia" he's seen working as a spy for Gumbald.
• Irrational Hatred: Has an obsessive hatred for Jake so intense that it drives him to violence and eventually complete mental collapse. ...because Jake never prints his letters.
• Persona Non Grata: He's banned from the local swimming pool; given his personality and tendency to hold grudges, it's not surprising he'd make the blacklist.
• Sanity Slippage: Gets increasingly unhinged with each appearance. By "Hot Diggity Doom" he's become borderline feral.
• Unknown Rival: To Jake, who doesn’t seem to know him despite being sent multiple letters.

Magic Man (SPOILERS)

Magic Man

Voiced by: Tom Kenny

"You know, believe it or not I'm not really a beggar, I'm actually a... MAGIC MAN!"

A mysterious alien from Mars. He was exiled after performing many magical pranks on the Martian people, in the hopes that he would learn how to care for others again, but instead spent two hundred years bumming around Earth being a jerk to everyone in Ooo. Fortunately, he changes his ways after Betty steals his magic powers, and spends the rest of the show ruling wisely to atone for his crimes against Mars.

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For more information, see Secondary Characters

Season 2

Hunson Abadeer

"Well, I'm sure not the guy who's gonna suck out your soul."

Voiced by: Martin Olson

The ruler of the Nightosphere (an Alternate Dimension populated by demons) and one of the most evil entities known to the Land of Ooo, probably second only to the Lich. Known as the "Lord of Evil", he's also Marceline's father, and has a complex and deeply strained relationship with her. His full name is not provided until Season 4.

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• Abusive Parents: Played With. Hunson does care for Marceline, but at the same time, he's very selfish and impulsive, doing what he wants no matter how it might affect his daughter personally (such as eating fries that he knew had significance to her, or forcing her into a position she does not want), and constantly ignores her own input whenever they do talk and often doesn't apologize for any of his actions towards her. Overall, his abuse comes from ignorance/alien morality than anything malicious.
• Affably Evil: To Finn and Jake in his second appearance, but arguably and surprisingly not Marceline, who he blatantly lies to and manipulates even under the guise of an eccentric but caring father. Granted, he does love and care about her, but is pretty lousy at explaining it. This is played more straight in "Marcy & Hunson".
  "I'm bad, but I'm not so bad, right?"
• Amazingly Embarrassing Parents: While he tries to be supportive in "Marcy & Hunson" by attending Marceline's concert, he only ends up making a scene and embarrassing her.
• Artifact of Doom: He owns an amulet made of concentrated evil, which gives the wearer a nice suit and transforms him or her into a ruthless Eldritch Abomination.
• Badass in a Nice Suit: Pilfers souls, rules the Ooo equivalent of the underworld and may rival the Lich himself, all while dressed in a snappy suit and tie. It's also invoked, since anyone who wears the amulet gains the suit and tie along with the pure evil.
• Blue-and-Orange Morality: A very odd example (as if this trope wasn't odd enough), but him being a demonic Card-Carrying Villain is what makes him have blue and orange morality. Like how he seems to genuinely believe that tricking Marceline into being his heir is the right thing to do, or how he sees nothing wrong with stealing everyone's soul, which in turn is committing mass murder.
• Card-Carrying Villain: He's described himself as "completely evil" with no shame.
• Chaotic Evil: Invoked. He grew up with it and as seen above, pretty proud of it.
• Dissonant Serenity: When he's first introduced, he treats the systemic soul-stealing genocide of Ooo as something he does everyday.
  Hunson: Okay. I'll go. I got business to attend to, anyway. Sucking up all the souls in Ooo.
  Finn: What?!
  Hunson: See you kids later. (Hunson rips open the door and walks out, laughing maniacally)
• Does This Remind You of Anything?: In his One-Winged Angel form, his face is large and round, with a vertical slit for a mouth.
• Embarrassing First Name: Jake seems to think so, as he scoffs when he first hears it.
• Even Evil Has Loved Ones: He really does love his daughter, even if he doesn't show it that much.
• Evil Versus Evil: A more comedic example occurs in "It Came From The Nightosphere", in regards to him and the Ice King. While Ice King confronted Hunson for attempting to eat Gunther's soul, he immediately realizes the lord of the Nightosphere is way out of his league and runs away terrified without a fight. He also seems to have special hatred for the Lich, according to the Adventure Time Encyclopedia.
• Faux Affably Evil: Like Marceline, he's a playful troll. Unlike Marceline, he makes good on his threats and then some.
• Fish out of Temporal Water: Possibly, given his reaction when he noticed Marceline turned the family ax into a bass guitar.
  Hunson Abadeer: Did you turn it into some kind of lute?
• Foil: To Flame King. Both are evil rulers and neglectful fathers with very rocky relationships with their daughters. However, unlike Flame King, who only saw Flame Princess as a threat to his throne and locked her away for years, Hunson genuinely loves Marceline, even though he has difficulty expressing it. Further more, while Season 9 sees Hunson take a level in kindness and attempt to connect with his daughter, that same season shows that while Flame King mellowed out, he's still a jerk that refuses to acknowledge how he mistreated Flame Princess.
• Follow in My Footsteps: Very much wants this for Marceline, to the point where he fools her into taking his Artifact of Doom so that she can have a taste of ruling over the Nightosphere. He mentions being a victim of this himself, although he doesn't seem to mind it at all anymore.
• Foreshadowing: In "It Came From The Nightosphere", he claims Gunther is by far the most evil thing that he's encountered. While it may seem like a funny bit, he may have been referring to Orgalorg.
• God of Chaos: A demon of explicit chaotic evil who sustains the Nightosphere with random cruelty.
• Greater-Scope Villain: Hunson has almost as much, if not the same amount of bearing on the plot as The Lich. However, the most we ever see of him is roughly an episode and a half. The rest of the time, he's only mentioned.
• Humanoid Abomination: His default form looks human, but is really a deathless, soul sucking demonic entity. His One-Winged Angel form falls firmly in Eldritch Abomination turf.
• I Want Grandkids: At the end of "Marcy & Hunson", he asks Marceline "So, when are you gonna have some kids?"
• Immortality: According to Marceline, he's "deathless" and can't die.
• Interspecies Romance: Had one with a human woman, and together they had a daughter, Marceline.
• Laughably Evil: When he's not being a Nightmare Fuel Station Attendant, he's very comical. A few examples include him singing a jaunty little tune while sucking the souls of ants as he stomps on them, and being found by Finn and Jake in his underwear as he grabs a midnight snack.
• Living Forever is No Big Deal: He's immortal but doesn't share any of his daughter's angst.
• Marionette Motion: Apparently a function of the amulet, as he moved normally when he wasn't wearing it.
• Most Definitely Not a Villain: He pretty much says this to the one of the fluffy people when he's about to steal their soul.
  Fluffy Person: Who the fluff are you?
  Hunson Abadeer: Um... Well, I'm sure not the guy who's gonna suck out your soul.
• Names to Run Away from Really Fast: It's not mentioned in the episode, but his title is the Lord of Evil.
• Nightmare Fuel Station Attendant: Initially in his first appearance, where he makes horrifying faces, moves in an unnatural, creepy way, and goes on a soul-stealing rampage after being summoned by Finn. However, the fear-factor is lessened once he bonds with his daughter at the end of the episode, and comes off more as a Laughably Evil Bumbling Dad in his later appearances.
• No Name Given: Until "Return to the Nightosphere"
• Our Demons Are Different: Described by the creators as more demonic than a vampire.
• One-Winged Angel: Like his daughter, he can turn into a giant monster. Though his is much more monstrous. Apparently he requires an object of power to do so. She does not.
• Parental Neglect: He was a rather neglectful father towards Marceline during her childhood, and what officially soured their relationship was when he ate the fries she bought. Still, he really does love her even if he isn't very good at showing it.
• Pet the Dog: Despite being a deadbeat, he does regularly show actual compassion towards Marceline.
• Red and Black and Evil All Over: Wears a black suit with a red tie and red boots and takes great pride in being ruler of the Nightosphere.
• Satan: Okay, it hasn't been confirmed, but considering he's "The Lord of All Evil" who steals your soul, and rules the Nightosphere which is essentially Ooo's version of Hell he probably is.
• Sealed Evil in a Can: Escaped from the Nightosphere in "It came from The Nightosphere" thanks to Finn, but is banished back by episodes end.
• Time Abyss: He's at least a thousand years old given he's Marceline's father, and the Adventure Time encyclopedia he wrote in-universe claims he's as old as time. Even as an Unreliable Narrator the later has credence, as he appears during Sweet P's speech about what existed before time.
• Tranquil Fury: When he notices Marceline turned the family ax into "Some kind of lute", he's visibly annoyed and he holds it against Marceline the entire episode.
• Troll: Towards Marceline, at least. 50% of the things he does are mainly to make Marceline angry.
• Unreliable Narrator: While he wrote the Adventure Time Encyclopedia, it makes quite clear at several points that there are things he does not know (such as Simon Petrikov's relationship to his daughter, or his own origins) and that there are assumptions he makes which are incorrect (he is fond of assuming that centuries or eons passed at certain points when other sources would indicate it was probably more like days, years at most).
• Unknown Rival: Claims to be the Lich's rival in the Adventure Time Encyclopedia. While he is likely one of the only characters with power comparable to him, the Lich doesn't appear to be threatened by him enough to try to kill him like he did with all of his other enemies (though it could be that he may not be able to kill Hunson or even know how to enter the Nightosphere.)
• Unnamed Parent: He's only known as "Marceline's Dad" until "Return to the Nightosphere".
• Vile Villain, Saccharine Show: One of the earliest examples, albeit being both downplayed and, presumably as of "Daddy's Little Monster", dropped it all together ^note Even more so in "Marcy & Hunson", where he gets reined in by Peppermint Butler, mooches off of his daughter, and gets beaten up by three ghosts. However, he is played at his darkest in "It Came From The Nightosphere", where he attempts to suck out all the souls in Ooo, has many grotesque Body Horror transformations, many of which are only shown through shadows and is an analog for Satan.
• "Well Done, Dad!" Guy: Cares a lot for Marceline's approval, even though he tends to go about it all wrong.
• Your Soul Is Mine!: His MO.

The Lich (SPOILERS)

The Lich

"Before there was time, before there was anything, there was nothing. And before there was nothing... there were monsters."

Voiced by: Ron Perlman; Kevin Michael Richardson when possessing Princess Bubblegum

"You are alone, child. There is only darkness for you, and only death for your people. These ancients are just the beginning. I will command a great and terrible army, and we will sail to a billion worlds. We will sail until every light has been extinguished. You are strong, child, but I am beyond strength. I am the end, and I have come for you, Finn."

An undead sorcerer who is supposedly Ooo's greatest evil and the main antagonist of the series. He has an army of the living dead and vast magical powers. He was defeated and sealed away in amber inside of a great tree by the legendary hero Billy. Not a funny character at all. Originally called the Lich King, renamed to avoid confusion with that other guy.

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• Abusive Dad: More like Abusive Past-Life, but he still qualifies as this to his reincarnation Sweet P, most specifically in "Whispers".
• Allegorical Character: While it's not explicit, his origin, his use of plutonium, his Walking Wasteland status, his affinity for sickly glowing green colors, his long half-life, and his goal of total annihilation make him seem like the personification of nuclear war. Given the implication he was born from the comet that destroyed the dinosaurs, it might be more apt to call him the personification of destruction. Nuclear war might simply be one shape that he takes.
• Always a Bigger Fish: He usually tends to be the big example of evil, but "Whispers" revealed something big: That he is the "Last Scholar of GOLB." This means that GOLB is connected to him and the Lich appears to have gotten power from him. The last episode implies that the Lich is literally nothing more than a minor incarnation of GOLB's breath.
• Ambiguous Situation: It's not clear what his exact relation with GOLB is beyond his statement of being "the last Scholar". It's implied he was created by GOLB, but unlike the other mutations we see GOLB make he's not mindless and he's also implied to be the reincarnation of a Catalyst Comet like Finn.
• Ancient Evil: The Lich, being a result of the Mushroom Bomb being dropped, is over a thousand years old. However, this is just how long this specific incarnation has been around. His original, Catalyst Comet form was the reason the dinosaurs went extinct, meaning he is at least 60 million years old. See Time Abyss below.
• Arch-Enemy: Pretty much is this to anything living, but special mentions to being this to Billy and now Finn. It has become more solidified each time, Finn and Jake put him down. Reinforced epically when he admits that Finn has bested him in many worlds. Given how the various Lich hands have spread across the Multiverse, he pretty much admits that the Finns of the Multiverse have pretty much been defeating him.
• Asshole Victim: Exaggerated; while he is a Knight of Cerebus instead of your average jerk, he is still horrified whenever he gets vaguely defeated.
• Attack of the 50-Foot Whatever: He's larger than Billy and is ENORMOUS in his first appearance.
• Ax-Crazy: While outwardly calmer and more composed than other villains, he's been killing on a planetary scale for a very long period of time, and his ultimate goal is the absolute is the eradication of all life.
• Badass Boast: "You are alone, child. There is only darkness for you, and only death for your people. These ancients are just the beginning. I will command a great and terrible army, and we will sail to a billion worlds. We will sail until every light has been extinguished. You are strong, child, but I am beyond strength. I am the end. And I have come for you, Finn."
• Badass Longrobe: Part of his Nonstandard Character Design. And the whole friggin' world fears him, he'd be badass no matter what he wore.
• Bag of Holding: Gets his hands on one in the comic, his plan being to suck up the entire land of Ooo and then throw the bag into the sun.
• Big Bad: After the Ice King's early onset Villain Decay, the Lich is the most prominent and important villain in the show, having appeared in every season in some capacity, and the de facto Archenemy of Finn and Jake. Much of the conflict in the show can be traced back to the Lich; such as his presence as the green catalyst comet leading Evergreen to create what would become the Ice King's crown to combat it, as well as Fern's failure to stop him leading him to do a Face–Heel Turn. It's also strongly implied that he was involved in the destruction of mankind and contributed to the series taking place After the End. Come Adventure Time: Distant Lands, the Lich ends up being the true Big Bad of "Together Again", making him the Final Boss of Finn and Jake's story.
• Big "NO!": Invoked, of all things. What better way to trick the hero into do something than to shout "Nooooo!" when he does it?
• Body Horror: Are those tendons hanging off his arms? Where are his cheeks?
  • The Guardian blood turning him into a baby was also full of this.
  • The successful version of the Lich that Fionna, Cake and Simon meet in Adventure Time: Fionna and Cake is still wearing Billy's corpse, which has become rotten with time. His flesh is torn open in places, his arms and legs are skeletal and his shriveled right eye is hanging out of its socket.
• Body Surf: Finn destroys his real body, so his soul transfers into Princess Bubblegum. After he's defeated again, he transfers again into the Snail, then to Billy. According to Prismo (who would know), he's a "ghost wearing a dead guy", so Billy is dead.
• Breath Weapon: Can use his Super Smoke to induce fatal Rapid Aging, complete with crumbling into dust.
  • It turns out that the Lich itself is the result of this, with the Cretaceous extinction comet and the payload used in the Mushroom War being implied to be some of GOLB's breath.
• Card-Carrying Villain: He knows exactly how brutal and evil he is but doesn't care.
  Finn: You're so evil, it's boring! You're basic, man!
  The Lich: Yes. While the mortal world doubts, and questions, I know exactly what I am. I am the ceaseless wheel. The last scholar of GOLB. I am your doom.
• The Cameo: In the episode "Prismo the Wishmaster" from Adventure Time: Fionna and Cake, his grinning silhouette can be spotted in a dark cave in a black-and-white universe, and an infant version of him appears in Baby World in "The Winter King", serving as a reminder of how he still persists through the Multiverse.
• Chaotic Evil: In-universe-assigned alignment in the comic series.
• Chaos Is Evil: The Lich believes that GOLB desires the death of all things. Apparently he was incorrect.
• Chekhov's Gunman: First appeared in "His Hero" for about a second in Billy's song, becomes the Big Bad of the second season finale.
• Cold Ham: While he's serious and straightforward all the time, he speaks with some of the most gravitas of any character in the show.
• Comet of Doom: "Evergreen" suggests that the Lich entity originated as the comet that wiped out the dinosaurs. "The Comet" confirms that his original form was an incarnation of the Catalyst Comet, a comet that hits Earth every 1000 years to bring about an agent of change. The Lich was an agent of pure evil, while Finn, who was also a previous incarnation of the comet, was an agent of pure good.
• Compelling Voice: One of his favorite powers. All it takes for the Lich to take the fight out of Finn and Jake is a single word: "Fall."
• The Corrupter: To Sweet P. He ultimately ends up failing.
• Crystal Prison:
  • He's encased in amber at the beginning of "Mortal Folly".
  • This happens again in Season 6, but he invokes it to get to the Citadel so he can release the criminals imprisoned there.
• Dark Is Evil: From his appearances to horrific powers, he's clearly dark and clearly evil.
• Death of Personality: While his personality isn't completely dead, there's still not much left of it after Sweet P's birth.
• Dem Bones: His true form, revealed at the Citadel.
• Did You Just Punch Out Cthulhu?: Masterminds the deaths of Prismo in Season 6 and Death in Distant Lands.
• A Dog Named "Dog": A lich named "the Lich".
• Do Not Taunt Cthulhu: During a party, most of the cast treat the seemingly catatonic Lich like a joke in Prismo's pad at the beginning of season 6. When Peppermint Butler asks why the Lich isn't murdering them all, Prismo explains the Lich's purpose is to cause mass death, and since he can't do that while trapped in Prismo's Time Room, he just doesn't do anything. The second Prismo carelessly reveals a way to off himself to Finn and Jake, which would also advance his goals of total extinction, the Lich shows exactly why ignoring him was a bad idea.
• The Dragon: It turns out he's merely this to GOLB. Or more accurately, thinks he's this.
• The Dreaded: According to the creators, he's so terrifying that even the Ice King and Marceline will run in terror of him. Princess Bubblegum's reaction to the possibility he's returning in the preview seems to further support this. It winds up being downplayed in the actual episode, as although Princess Bubblegum does truly fear him (Marceline does not even appear), Ice King seems to be completely clueless about the Lich due to his Cloudcuckoolander nature (being more concerned with holes), and he actually eagerly volunteers to help fight the Lich later on.
  • "King Worm" implies that even Finn is afraid of him (and possibly his greatest fear, enough to wake him from his dream).
  • It's so bad, even the creators are scared of him. In the original pitch document, underneath an early sketch of the Lich is the phrase, in All Caps, "THE LICH KING IS NOT FUNNY".
  • Even Death himself and Peppermint Butler seem to be at least creeped out by him.
  • While Hunson Abadeer called him pathetic, he admitted that the Lich and his army are capable of destroying Ooo and that he would have taken action against him if it wasn't for Finn. Abadeer also called the Lich his rival.
  • In Adventure Time: Fionna and Cake, when Simon sees The Lich is the one called "Jerry" in the Extinct World, he yells at Fionna and Cake to RUN. Luckily, though he traps them with his magic power, The Lich is too depressed by having fulfilled his supposed purpose to kill them and lets them go, but Fionna and Cake are left understandably terrified of him.
• Dub Name Change: In the Polish dub his name is changed to "Król Zła" or "Król Zły" meaning "King of Evil" or "Evil King" to match the show's Theme Naming like Ice King, Flame King etc.
• Eldritch Abomination: He is heavily implied to be this in "Gold Stars", where he gives a monologue about primordial "monsters" that existed before the beginning of time. Depending on how you view it, he either knows about them a lot or is one of those eldritch beasts himself. "Evergreen" implies that he's an incarnation of a Catalyst Comet.
• Enemy Within: To Sweet P until the latter kills his Farmworld Copy, after which Sweet P seems to have fully overcome his influence.
• Evil Cannot Comprehend Good: Subverted-his attempt to tempt Finn with something selfish like immortality or "anything you want" fails and he breaks the Enchiridion...which is exactly what he wants and was actually playing on his heroic nature to break it and open the portal to Prismo for him.
• Evil Genius: Not only is he an Omnicidal Maniac, but he's also pretty calculating, manipulative, and intelligent.
• Evil Has a Bad Sense of Humor: The "no humor" kind. The Lich isn't light-hearted or comical in any sense of the word and is by far the show's most evil character.
• Evil Is Burning Hot: He is able to shoot sickly-green fire. It's usually just there to illuminate his Nightmare Face.
• Evil Is Deathly Cold: Given his association with death and lifelessness, it's implied.
  The Lich: Aren't you cold, Finn?
• Evil Laugh: He laughs a total of three times, usually when everything is going Just as Planned and the heroes are unable to stop him, but also when Finn is tearing his head off with a sweater. It is incredibly disconcerting to hear.
• Evil Sorcerer: Of the necromantic kind. He's able to resurrect the dead, rot all life around him with his presence, shoot out sickly green flames, and spew noxious gas capable of reducing people to ash.
• Evil Sounds Deep: He has a very low and menacing voice, courtesy of Ron Perlman. Although it was supposed to be even deeper, as Pen's original choice was Tom Waits.
• Evil Virtues: Although pure evil, the Lich still has a commendable amount of determination and diligence. He never stops working on his mission to destroy all life no matter what the setbacks (i.e.: continuing to cast mind-control spells from his amber prison just on the off-chance an unprotected mind may enter), and there's not a moment he isn't planning. He's also patient to an impressive degree, waiting months, if not years, for his plans to come together like learning about Finn from afar as part of his plot to exploit his heroism or holding off killing anyone in Prismo's Time Room until the opportunity to do so without it being fixed presents itself.
• Expy: The Lich's design is heavily influenced by The Horned King. They're pure evil liches that want to exterminate humanity, completely humorless, and are treated dead serious compared to most other Disney/Adventure Time villains
• Eye-Dentity Giveaway: Any vessel that he possesses gains his Glowing Eyelights of Undeath. He eventually ceases to use direct possessions once he realizes how easily this gives him away.
• Face–Monster Turn: Implied to be a human mutated into a weapon, then subverted; The human is just a vessel for whatever malevolent force or spirit the Lich is embodied by.
• Failure Is the Only Option: For all his terrifying power and the grim seriousness with which he is presented, the Lich is always undone by the end; the Lich even admits that Finn has defeated him time and again across The Multiverse, even as he crows about always coming back. In Adventure Time: Fionna and Cake, we get to see a version of the Lich (technically the original) who successfully killed all life, but he's become crippled by ennui and boredom, and soon learns to his dismay that killing all life was never going to get GOLB's approval to begin with.
• Faux Affably Evil: Despite being a monstrous entity and pure evil, the Lich speaks in a very polite, formal, and refined way.
• Flat Character: Played for Horror. His backstory is very vague, he doesn't speak much, and his entire character revolves around destroying the normally whimsical land of Ooo. The Lich is an absolute force of destruction, and at the end of the day, that's all he wants to be. Finn hangs a lampshade on it by accusing the Lich of being "so evil, it's boring". The Lich responds by admitting to being proud of such.
  • Lampshaded by Finn in "Whispers":
    Finn: You're so evil, it's boring! You're basic, man!
• Flight: The Lich can fly under his own power, though only shows this ability in his first shown form.
• Foil: He's the exact opposite of Finn. The Lich was born from the Green Catalyst Comet that struck Earth and killed off the dinosaurs and seems to represent Mass Extinction while Finn is the Reincarnation of the Blue Catalyst Comet, which incarnated as a butterfly (a symbol of rebirth). While the Lich is pure evil, relishes in his cruelty, and wants to exterminate life, Finn has a pure heart and is more than willing to fight against the bad guys. Even by the end, they're physically opposed in that Finn is missing an arm, but all the Lich is at this point is an arm.
• Freak Out: Has one when Finn throws the Guardian's blood on him, beginning to bring him back to life.
• Freudian Excuse: His origins are overall a mystery, but it's implied he was formed from the essence of GOLB long ago. Knowing this it's hard to blame him for what he turned out to be given he obviously never had any family or friends like Finn, Jake, Bonnibell, or Marceline. That said, it doesn't make him any less vile, as he's quite aware of what he is and proud of it. Adventure Time: Fionna And Cake finally plays it straight by revealing the Lich's ultimate motivation for killing all life is to gain GOLB's favor, or at least some form of recognition or approval. The Extinct World Lich (who succeeded in killing his universe) reacts poorly when his god continues to ignore him.
• From Nobody to Nightmare: While who or what he was isn't made clear, he was a member of the Pre-Mushroom War civilization before the nuclear pollution mutated him into the immensely powerful Omnicidal Maniac. Though considering his Body Surf abilities and the implication he existed far earlier, the core personality of the Lich probably wasn't some innocent victim, just the body of the dude he used. Later episodes more or less confirm that his first body seen in the series wasn't his original form and that he's actually the incarnation of a malevolent Catalyst Comet with whatever human that got exposed to the bomb being an unfortunate victim caught in the crossfire and forcefully turned into a vessel.
• Full-Frontal Assault: Taken to extremes in his Season 6 battle with Finn, when escaping from his Crystal Prison destroys all the clothing and tissue remaining on his body. The result is a giant skeleton whose only covering is a small metal bar on its ribcage over its heart. While safe for work, it's at once horrifying and wrong.
• Genre Refugee: In terms of tone and personality, he's almost alien to the setting, which results in many characters underestimating him as they tend to lump him in with goofy malcontents like the Ice King and Magic Man, believing that he'll suffer Villain Decay like most recurring antagonists. This never happens, and he viciously strikes back the moment an opportunity presents itself. Conversely, he is often blindsided by the silliness of the show such as sweaters with great sentimental value or being turned into a giant baby.
• Genuine Human Hide: Ends up killing Billy and skins him for a disguise. He disposes of it when he breaks out of the Crystal Citadel.
• Glasgow Grin: Due to decay, he has a permanent Slasher Smile. When in his ruined Billy disguise the Billy half of his face is stuck in a permanent Cheshire grin while the Lich half tends to look bored (unless he's letting loose his Evil Laugh).
• Glowing Eyelights of Undeath: He and anyone he's controlling have these. At least at first.
• Go Mad from the Revelation: Attempts this a few times via Mind Rape and revealing Things Man Was Not Meant to Know.
  • Ironically, this happens to his alternate self in the timeline where his wish was granted. His actions were largely motivated by the desire to serve and earn the approval of his deity, GOLB. Realizing that GOLB didn't want cosmic extinction (and/or had no desires whatsoever), he breaks.
• The Heavy: He is the one who carries out GOLB's plans, the Greater-Scope Villain of the show.
• Hero Killer: One of the more successful examples. Just ask Billy.
  • He comes back in the season 6 premiere to off Prismo, of all people.
• Horned Humanoid: He has a pair of curly, ram-like horns on his head, which only make him look even more demonic than he already does.
• I Am the Noun: "I am the End."
• I Am What I Am: When Finn accuses him of being little more than a Generic Doomsday Villain, the Lich is proud of this, since he knows who he is. He also ends up revealing a very important timbit about himself, he is the Last Scholar of GOLB.
• Immortality: Appears to have this, a combination of types four and five, due to being a Lich and his habit of Body Surfing whenever his physical form is destroyed. The creators have said that he hasn't beaten Death but is cheating him at every turn. At the very least, the Maid was able to vaporize Farmworld!Lich, although given that a piece of him survived and now exists in every dimension simultaneously it very much does not stick. "Whispers" and "Together Again" both show this is the case and neither put an end to his threat forever.
• Implacable Man: Part of what makes him frightening: his reason for existing is to wipe out all life, and he just won't stop, and has ungodly patience. Trap him in amber? He'll spend years chanting evil spells, just waiting for the first unprotected mind to come within range, break free, and continue like nothing ever happened. Destroy him? He'll just find a new body to continue his rampage. Kill him again? He'll do the above then kill the hero that originally beat him and use him as a suit. Trap him in a room outside of time? He'll just sit there, waiting for the opportunity to strike the nanosecond it presents itself. Trap him in an multiversal prison for cosmic criminals? He'll destroy his prison from the inside out then mind control said criminals into becoming his army. The best anyone can hope for when it comes to the Lich is to contain him for a time, but he will get back up and pick up where he left off without missing a beat, now knowing just how to counter what you used against him.
• Insult Backfire: When Finn mocks him for "being so evil it's boring" the Lich nonchalantly agrees and says he takes pride in it since it means he knows what he is.
• Irony:
  • When disguising himself as Billy, he lied to Finn by saying that he planned to use the Enchiridion to trap the Lich in the room outside of time, in order to justify why he would need his help to activate it. In "Jake the Dog", when Jake retroactively changes his wish into making the former and Finn go back to Ooo, he gets trapped in that very same room (though not for long).
  • He killed Billy and puppeteered his corpse. His reincarnation Sweet P wound up becoming the Future Ooo's equivalent to Billy.
• It Only Works Once: He's too smart to be defeated the same way twice; Billy's Gauntlet was the only known weapon to harm him (it's likely the reason the Lich has a broken horn). Destroying it is among the first things he does, before even fully recovering. Attacking him with a sweater and The Power of Love didn't work out so well the second time either.
  • Billy only worked once, considering the Lich killed him and possessed his corpse at the first chance. He also used Finn's heroism to further his goals.
  • The Lich also took swift care of Prismo not just as revenge or to avoid the genie messing with his affairs: he voluntarily got imprisoned just to melt away the Citadel and take control of his fellow cosmic criminals.
• It's Personal: Does this for Finn and Jake by, respectively, killing Billy and Prismo.
• Jerkass: A Deconstructed example; he's far from being mean, as expected from someone without redeeming and/or laughable qualities. And that's saying something.
• Karmic Transformation: The Lich native to Finn and Jake's universe murdered the legendary hero Billy, who once stopped him from wiping out all life in Ooo, then wore his skin to impersonate him. Not only does the Lich end up transforming into a living innocent being named Sweet P, but the finale implies Sweet P grows up to essentially become Billy's equivalent as Ooo's legendary hero.
• Knight of Cerebus: Prior to his return, Adventure Time was a lighthearted, whimsical show with generally comical villains. The Lich, on the other hand, is an Omnicidal Maniac hellbent on destroying all life. Ever since his first major appearance, the show would begin taking a darker tone and examine the more horrifying and upsetting aspects of the post-apocalyptic setting.
• Lack of Empathy: Has zero concern or value for any living thing, even his "Sweet P" self, outright desiring to kill everyone.
• Latex Perfection: Despite wearing Billy's skin as a disguise, none of his identifying features stand out until half his face is taken off revealing his horned skull underneath.
• Laughing Mad: In season 2, when Finn is tearing his head open with PB's magic sweater, the Lich suddenly breaks into loud, wheezing laughter and keeps laughing until Finn destroys him. It's easily the most emotive he ever gets in the show (all of his other evil laughs are, at most, quick and sinister chuckles).
• Lightning Bruiser: The other reason It Only Works Once. He's a lot quicker on the draw than he looks.
• Manipulative Bastard: He manages to use Reverse Psychology on Finn to gain access to the Multiverse.
• Mind Rape: Has this ability if one isn't wearing the proper magical protection or has The Power of Love.
• More Despicable Minion: It's eventually revealed he's this to his creator GOLB. While GOLB is a barely sapient entity that's more force of nature than evil, the Lich is a truly malevolent being who relishes the carnage he spreads and serves GOLB solely out of his love of chaos and death.
• Morphic Resonance:
  • His vessels retain his Glowing Eyelights of Undeath... ...until he realizes this is a dead giveaway and learns how to stop doing it.
  • The comet from which it originated possesses flames shaped like the Lich's curling horns.
• Multiple-Choice Past: The Lich is given various and often contradictory possible origins throughout the show. These include:
  • It's implied he's a mutated monster born from the nuclear fallout from the Mushroom bomb going off that ended the world. This is seemingly backed up by the fact his Farmworld version is created the same way.
  • It's also implied that he's the reincarnation of a Catalyst Comet which came to Earth and wiped out the elementals due to its green color, horns, and desire to end all life. As the reincarnation of the blue Catalyst Comet, Finn is destined to be his eternal enemy throughout their reincarnations.
  • His speech in "Gold Stars" implies he's an Eldritch Abomination, and a member of a race of beings who are as old as the universe.
  • It's also implied that he's actually an eldritch being and a creation of the god of chaos GOLB, as he states that he's the "Last Scholar of GOLB".
• Multiversal Conqueror: Revealed to be his ultimate goal in "Wake Up", planning to command the Citadel inmates to exterminate all life in the multiverse.
• Mysterious Past: His origin is quite contradictory and vague. While at first it was believed that he was created by the Mushroom War, other theories suggest that he is an ancient being, or that his origin is related to GOLB. Even after the end of the series, his nature is never explained with certainty, or why he wants the extinction of all life.
• Near-Villain Victory: Reaching his well of power and nearly killing Finn, only for Finn to be protected by a sweater, wishing all life in the multiverse to be gone only for the wish to be undone by the only living creature left to make a wish, escaping from the Citadel with its mind-controlled inmates to conquer reality, and being seconds away from killing Finn only to be rendered harmless by the guardian blood. He's been defeated more due to sheer luck than actual skill from the heroes.
• Necromancer: Well, he is a lich.
• Nice Job Fixing It, Villain: The Lich's plan: kill Prismo, get taken to the Citadel, release the cosmic criminals there, and form an army to exterminate life in the universe. It's a very good plan, but it has two problems:
  • One, it allows Finn and Jake to get to the Citadel (where they already wanted to go) without being imprisoned in crystal. If the Lich had let them wake up Prismo, they may have been trapped forever.
  • Two, the Citadel contains Guardian blood, a substance capable of defeating him. As far as we know, nothing on Ooo could have done that.
• Night of the Living Mooks:
  • The Lich was said to command these in his pitch document. A group of skeletons at his lair rise up to try and stop Finn and Jake from entering.
  • In the beginning of Season 6, instead of an army of undead he attempts to use ancient, cosmic criminals to kill all life in the universe. These are guys strong enough to destroy entire planets in seconds; they're probably more effective than undead.
• Nightmare Face: He's got nasty, rotting flaps of flesh hanging off his face where his lips should be.
  • Made worse after his disguise as Billy is ruined showing half of Billy's face stuck in a permanent grin and the rest showing the Lich's skull.
• Non-Standard Character Design: Most of the main cast is made of simple cartoony shapes and bright colors without much detail. The Lich is made from complex shapes that make him look more human, uses dark and threatening colors along with his trademark Sickly Green Glow, and has a lot of detail on his face and all the tendons and flaps of skin hanging off his frame.
• Not Quite Dead: The Lich still exists deep within Sweet P, the name given to his reborn body by Tree Trunks and Mr. Pig. Sweet P is an innocent child, but the Lich can still manifest his presence through him deep within. And it's not clear what will happen when Sweet P eventually dies...
• Nuclear Mutant: Implied to have arisen as a result of one of the weapons used in the Mushroom War, if "Jake the Dog" is anything to go by.
• Obviously Evil: His demonic face, dark cloak, skeletal body, and dark magic just make it pretty clear that he's a villain. Jake even lampshades when trying to tell the now crazy Famworld Finn that he isn't their friend.
  Jake: Come on that's the Lich. He's evil! He's not even trying to hide it, bro!
• Oh, Crap!: When he realizes he wished for Finn and Jake to return home safely instead of wishing for the end of all life (thanks to Jake's wish).
• Omnicidal Maniac: According to Princess Bubblegum, his goal is to destroy life. His original wish was for Prismo to destroy all life.
  • Given that he was born from the comet that killed the dinosaurs and reappeared during a nuclear war, he is the essence of this.
  • Best summed up by this quote: "I will command a great and terrible army, and we will sail to a billion worlds. We will sail until every light is extinguished."
• One-Winged Angel: In Princess Bubblegum's body, he tricks Finn into getting him the things he needs to fully regain his powers and turns into a gigantic monster that beats the stuffing out of Finn, the Gumball Guardians protecting the Candy Kingdom, and Jake, then tears apart the Candy Kingdom. It ultimately takes an Enemy Mine with Ice King to defeat him. And even then, his soul transfers again.
  • In the final fight between him and Finn, he sheds Billy's guise and returns to his true form.
• Our Liches Are Different: He was created by a nuclear bomb.
• Person of Mass Destruction: Luckily, he didn't regain his full power... yet.
  • We see him at full power in 'Escape from the Citadel'. He's powerful enough to destroy a multiversal prison for cosmic-level criminals (some of which can destroy planets in seconds) just by being there. And can utterly rob Finn and Jake of all their strength, and leave them nearly helpless and at his mercy on the floor, with a single word. "I am beyond strength" indeed.
• Pet the Dog: Believe it or not. In "Gold Stars" he only emerges briefly to terrify the King of Ooo and his sidekick when they go too far bullying Sweet P. Or the Lich may have just been personally annoyed by them.
• Phlebotinum Killed the Dinosaurs: In "Evergreen", it is suggested that the Lich originated as a malevolent force possessing the comet that killed the dinosaurs.
• Playing with Fire: Has the ability to shoot green flames from his hands.
  • In the season 6 premiere, he's shifted to physically impossible black flames.
• Power of the Void: The Bag of Holding that he obtains in comics can suck up anything similar to a black hole.
• Psychic-Assisted Suicide: Tried to make Finn walk into his well, which would likely have killed him (or mutated him horribly).
• Psycho Supporter: The Lich is a fanatical worshipper of God of Chaos GOLB, to the point of planning to wipe out all life in order to earn its favour. He intends to become the embodiment of chaos itself.
• Raise Him Right This Time: After Finn turns him into an apparently innocent infant, he's left with Tree Trunks and Mr. Pig presumably for this reason.
• Revive Kills Zombie: The healing regenerative blood of the Citadel Guardians transforms the Lich into a giant baby, seemingly erasing all his memories in the process.
• The Rival: Towards Abadeer, according to the Adventure Time Encyclopedia. It's unknown if the Lich is aware of this.
• Sadist: Not only does he want to wipe out all life, but it's clear he enjoys killing and tormenting his victims psychologically as well, like sarcastically thanking Finn for unknowingly helping him gain access to Prismo's realm or laughing at Jake over his anger about Prismo's murder.
• Scary Skeleton: He has the appearance of a skeleton, wearing a cloak in his debut. He is a monstrous creature who wants nothing more than to eliminate all life and has the power to do it. It Only Works Once on the Lich, as he is so intelligent and skilled in planning to the point where it is pretty much impossible to defeat him the same way twice. The Lich, having slaughtered Billy as well as used his skin as a disguise, is absolutely not to be trifled with.
• Sealed Evil in a Can: Was imprisoned in amber by the legendary hero Billy. Unfortunately, said amber turns out to be extremely fragile. Later he invokes this by getting himself locked in the Crystal Citadel knowing he can break out of it, along with breaking the dangerous inmates to help him kill everyone.
• Sealed in a Person-Shaped Can: He continues to exist inside Sweet P, his reborn body, until Sweet P is able to suppress him for good in "Whispers". In the last episode, Betty taking over the mind of GOLB erases his creations from Ooo, which may have finally totally erased the Lich for good.
• Sickly Green Glow: If it isn't the flames he shoots it's the bubbling potion he uses to regain his power.
• Slasher Smile: Initially his default expression is a grin, a grin being the default expression of any skull, but once he's revealed as wearing Billy's skin, he adopts a nasty smile made all the worse by the fact that half of his face is his own, and the other half Billy's.
• The Sociopath: Even though the Lich is an evil entity, he seems to be smart and cunning enough to understand human morality, embodying far more hate and evil than the vast majority of the villains in the series. During his appearances, we can see that he is a very good actor (he literally posed as a legendary hero to achieve his goals), is an exceptional manipulator, and his ultimate goal is the absolute eradication of life.
• Soft-Spoken Sadist: Rarely raises his deep, chilling voice. He even shushes Finn, once, just before shattering a weapon that was both a living, feeling being and Finn's only hope of defeating him/surviving.
• Static Character: While Finn and other major characters undergo Character Development, the Lich never changes or falters from being the determined, unrelenting Omnicidal Maniac. This is part of what makes him a dangerous villain; his refusal to rethink his goals or change as a person means he will always be dedicated to his omnicidal mission no matter how many times he's thwarted.
• Stealth Pun: He's a zombie that was born from a nuclear bomb. In other words, he has a long half-life.
• Super Smoke: When the Snail opens a small hole in his amber prison, he escapes through it in the form of an acidic cloud of black smog. Then does the same thing to get through the wall to the outside. As the season 6 premiere demonstrates, he can also use it offensively.
• Taught by Experience: The reason for It Only Works Once. It's not that he becomes immune to whatever defeated him, he just makes sure to prevent prior tactics from being used on him again by targeting the source of his defeat.
  • Billy's gauntlet was used to defeat him before, so one of the first things he does is destroy it before Finn can use it against him.
  • Later on he kills and impersonates Billy himself after obtaining the Enchiridion so as to both get the old hero out of the way and also to make sure Finn unwittingly assists his goals.
  • When he returns from his thwarted wish he makes sure to kill Prismo to prevent him from screwing him over again.
• Time Abyss: Has at least existed for longer than Ooo has, making him over a thousand years old. "Evergreen" heavily implies he was or is an incarnation of the Catalyst Comet that wiped out the dinosaurs, making him tens of millions of years old. "Gold Stars" implies he existed before the universe, or at least somehow knows what came before it.
• The Undead: Once more, he is a lich. Also a large reason why it is very difficult to make sure he stays dead.
• Undead Abomination: It turns out that he is not just a magic-infused zombie. He was created from an Unholy Nuke that harnessed Golb's power, himself a reincarnation of various other destructive forces in the universe.
• Vile Villain, Saccharine Show: Oh hell yes. The first thing you'll notice about him is that, unlike the other villains in this show, he has no humorous quirks that can make him any less terrifying.
• Viler New Villain: Prior to his first appearance, Finn and Jake's most recurring antagonist had been the Ice King, who'd been an Ineffectual Sympathetic Villain even before his tragic past was revealed. When the Lich was introduced in the second season finale, he became the show's proper Big Bad and a villain terrifying in both appearance and nature.
• Villainous Breakdown: Loses it in "Jake the Dog" when Jake makes the wish to negate the human extinction wish just made and send both Finn and Jake back to Ooo, thereby bringing everything back to square one.
  • In "Escape From The Citadel" the Lich finally loses his cool when Finn throws some of the healing blood of the Guardians on him, which begins rapidly regenerating him. He responds by screaming in panic and frantically trying to get it off him as it "reboots" him. He doesn't even have time to use the typical villain defeat phrases.
• Villainous BSoD:
  • While inside of Prismo's time room, where death cannot exist, he ends up just standing there motionless since he already used up his wish and there's no way to get out without Prismo teleporting him out. He finally reanimates once Finn and Jake bring Prismo's body to the time room, allowing Prismo to cease existence by waking his body up and making death a possibility once more, alongside baiting the Citadel Guardians to take him to the Citadel and amass an army of cosmic criminals to continue his genocide.
  • In "Jerry," his alternate self that succeeded in destroying all life ended up in a similar state, since death is still impossible if there is no life. Unlike his mainstream self, where he was simply waiting to make his next move, here he's sincerely depressed to the point that he doesn't even do anything to Simon, Fionna and Cake despite having them at his mercy. When GOLBetty rescues Simon from Scarab, however, he follows them through the portal... just to rant to his master about how meaningless everything was all along.
• Villain Respect: During an evil monologue, he admits Finn is strong, but then states his strength is irrelevant. Still, it's a long way from their first confrontation when he contemptuously tells Finn he's a joke to him.
• Walking Spoiler: It's hard to talk about the Lich without spoiling the major impact he has on the story, or what he implies and/or reveals about the series' backstory or even the existence of Sweet P.
• Walking Wasteland: He leaves a path of death and destruction in his wake. After he possesses Princess Bubblegum, he uses this to wilt an entire room full of flowers with one touch.
• We Can Rule Together: He attempts this on Finn in the Season 4 finale. It turned out to be a Batman Gambit played on Finn's heroic personality. He rejects the offer and smashes the Enchiridion, which was exactly what the Lich wanted. Had he joined him, the same thing would have played out anyway.
  • He tries this again on Sweet P, but instead he didn't account for Sweet P being an Anti Anti Christ, so he had no back up plans that time.
• "Well Done, Son" Guy: Fiona and Cake's finale reveals that he only wants to kill everything because he think it will impress GOLB. GOLB didn't seem appreciative.
• Wicked Cultured: He is intelligent, polite, speaks formally, and has a great knowledge of how everything was before time and life.
  The Lich to the King of Ooo: Stop. I have learned much from you. Thank you, my teachers. And now for your education. Before there was time, before there was anything, there was nothing. And before there was nothing, there were monsters. Here's your gold star!
• Worf Had the Flu: Finn manages to beat him in the first fight, only because he is prevented from regaining his full strength. When he does later, he's powerful enough to deliver a Curbstomp Battle to Finn, Jake, and the Gumball Guardians of the Candy Kingdom, requiring an Enemy Mine with Ice King to defeat him. Even without his full power, he is able to shatter the gauntlet given to Finn to kill him and knock out Jake in one blast.
• Would Hurt a Child:
  • He wants to exterminate all existence, and that means killing everyone, including children.
  • He is more than willing to kill child hero Finn as well.
• Wrong Assumption: The Lich thinks that killing all life will please his indirect creator, GOLB. He was fatally mistaken. Given that killing all life would bring perfect eternal order and an end to Chaos . . .

Season 3

Fight King

Voiced by: Dee Bradley Baker

An evil king and the main antagonist of "Morituri Te Salamus"

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• BFS: See Soul Jar below.
• Blood Knight: An interesting example, he doesn't enjoy fighting as much as he enjoys watching other people fight.
• Covered with Scars: His skin is black at this point.
• Didn't Think This Through: Giving Finn the one thing that could kill him.
• Evil Cripple: He has only one arm and never moves from his throne (Although his picture shows him standing), likely due to how withered and mummified his body is.
• Hoist by His Own Petard: As said above, he gives Finn his Soul Jar.
• Load-Bearing Boss: The arena floats away with his soul.
• Meaningful Name: He's a king, he loves watching people fight.
• Obviously Evil: The appearance variety, Finn & Jake realise this pretty early on.
  Jake: We sniffed out that trap like CHAMPS!
• Our Liches Are Different: While not the Lich, he appears to be some kind of undead being, and his sword also acts as his phylactery, which kills him after Finn destroys it.
• Soul Jar: His BFS, After Finn destroys it, he withers into nothing.

Scorcher

A serious and dangerous hitman with power over fire.

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• Assassin Outclassin': Ice King attempts to have Scorcher killed by contracting another hitman to take him out. Said hitman is almost immediately defeated when Scorcher burns through his Powered Armor, leaving the small guy inside to run away in fear.
• The Bus Came Back: Returns in the final season as part of Gumbald's army.
• Fireball Eyeballs: When he gets mad.
• Foil: Hyper-competent fire power user to counter Ice King's inept ice magic.
• Implacable Man: He cannot be bargained or reasoned with once he's been contracted by his employer and will not stop until his targets are dead. Ice King had to lower Finn and Jake's body temperature by freezing them just to make it seem convincing enough they were dead just so Scorcher would stop.
• Just Following Orders: Implied, though maybe he just likes to kill.
• Karma Houdini: In "Come Along With Me", he escapes the war against GOLB.
• Knight of Cerebus: Parodied. He's completely stoic, is absurdly competent, actively tries killing Finn and Jake in his sole episode while nearly managing to do so a few times if not for the interference of Ice King, and has no personal comedic quirks. The thing is, unlike The Lich, who instantly makes the atmosphere and story darker once he shows up, Scorcher is instead used as a Straight Man to Ice King, who treats him as if he's an old friend of his.
• Playing with Fire: Obviously, since he has fire powers.
• Professional Killer: He is a hitman who will absolutely not be stopped from completing his contract, even if his employers wish to re-negotiate the contract or pay him more to end the hit.
• Red Eyes, Take Warning: Red burning eyes, meaning he has fire power.
• Sadist: Implied. When Ice King tries to trick Scorcher to turn around, it's the promise of seeing someone in pain ("Someone got hit in the boingloings.") that gets him to turn around.
• Straight Man:He acts as a far more serious foil to Ice King.
• Super Smoke: He has the ability to turn into a black smoke.
• Villain Team-Up: With Gumbald.
• The Voiceless: He never speaks in any of his appearances.

Ash

Voiced by: Steve Agee

Marceline's old "Genius Wizard" boyfriend. They started living together in the Tree Fort (before Joshua) until Ash moved Marceline away from the Candy Kingdom to his current house. Then he sold her teddy bear to a witch, earning his girlfriend's anger.

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• Affectionate Nickname: He calls Marceline "Mar-mar".
• Asshole Victim: In "Betty", Simon lays him out with one hit and steals his flying carpet. It's unethical to do towards someone who Simon doesn't know whether he is good or not, but he deserved it regardless. What makes it funny is that Ash basically got knocked out by Marcie's surrogate father.
• The Bus Came Back: Returns in the final season as part of Gumbald's army.
• Bullying a Dragon: Considering all the things Marceline can do, Ash is very lucky that all he got in retaliation to his Domestic Abuse was a few Groin Attacks and a Giant Foot of Stomping.
• Cute Little Fangs: They're a bit more rounded than most examples, though.
• Domestic Abuse: Of the emotional variety. He treats Marcie more like an object that should be his rather than a person.
• Eye Scream: Goes blind while he is beat up, as he says "Ohh... I can't see..."
• Fantastic Racism: He hates Marceline hanging out with "mere mortals".
• Faux Affably Evil: He's usually chill and friendly but this barely hides how he's a possessive, manipulative jerkass who values his own happiness over anyone else.
• Giant Foot of Stomping: Is the victim of one at the end of his debut episode, courtesy of Jake.
• Groin Attack: Also gets one of these.
• Hate Sink: In his sole major appearance, he is shown to be a tremendously sexist and abusive boyfriend to Marceline who sold her Hambo to a witch just for his own self-benefit. As a result, any comeuppance he receives is definitely well deserved.
• Hoist by His Own Petard: The memory spell he used to try to trick Finn and Jake into retrieving the bad memory of him within Marcie's mind is used by Finn to show her why she dumped him in the first place. What's more, the "mere mortals" he tricked join in on beating the crap out of him with Marceline.
• I Want My Mommy!: When Marceline and Finn beat the tar out of him at the end of "Memory of a Memory," he pathetically cries out "Someone call my mom!"
• Jerkass: He utterly abuses Marceline.
• Karma Houdini: The last time we see him, he escapes the war against GOLB.
• Lack of Empathy: Doesn't care about how his actions hurt Marceline, despite it being blatantly obvious they do.
• Large Ham: Just listen to him describing the sandwich he wants.
• Laser-Guided Karma: Finn, Jake, and Marceline kick the crap out of him for his abuse of Marceline and manipulating his way back into her life.
• Manipulative Bastard: Tricks Finn and Jake into going into Marcie's mind and getting the bad memory of him just to claim her as his own.
• Magical Incantation: His flight spell.
  "Ashicus Flyicus"
• Never My Fault: Never thinks that Marceline breaking up with him might have been his fault for selling her most prized possession.
• No-Holds-Barred Beatdown: Gets one at the end of his episode and it was richly deserved.
• Small Name, Big Ego: If the whole "You're not a Genius" bit is anything to go by.
• Squashed Flat: Jake squashes him at the end of his introduction episode.
• Stay in the Kitchen: His demanding that Marceline make him a sandwich is what finally pushes her to retaliate against him.
• Straw Misogynist: Darn near parody levels of this. See directly above.
• Unexplained Recovery: After being on the receiving end of a No-Holds-Barred Beatdown from Marceline, Finn, and Jake, he's revealed to have survived being Squashed Flat by Jake in "Betty," without any signs of being crippled at the very least.
• Villain Team-Up: With Gumbald.

The Stag

A creepy deer who has been kidnapping the Candy Kingdom citizens and the main antagonist of "No One Can Hear You".

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• The Cameo: Other than his major appearance in "No One Can Hear You", the Stag also appears in the episode "Sons of Mars", where Magic Man turns him into a telescope.
• The Dog Was the Mastermind: Finn briefly believes it was a delusional Jake who trapped all the candy people. Jake believes it too after he comes to his senses, but then Peppermint Butler reveals everyone was trapped by the Stag who was attacking the candy people earlier in the episode.
• Forced Transformation: Magic Man forcefully turns him into a telescope in "Sons of Mars".
• Mask of Sanity: The Stag is always silent and even seems like a normal deer but is clearly deranged, as shown by his breaking Finn's legs without a hint of reaction.
• Silent Antagonist: The Stag never utters a word through the entire episode, even as it commits horrific violence and kidnaps the Candy Kingdom citizens.

Me-Mow

Voiced by: Kyla Rae Kowalewski

A tiny cat-like assassin that attempts to kill Wildberry Princess in "Jake vs. Me-Mow". She reappears much later in "Angel Face", having become a Bounty Hunter and grown much larger.

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• Ax-Crazy: A sadistic assassin who gleefully loves her job — which involves killing people.
• Badass Adorable: Don't let her size fool you; she's quite deadly.
• Bounty Hunter: Resorts to hunting bounties after getting kicked out of the assassin guild.
• The Bus Came Back: Returns four seasons later after her initial appearance in "Angel Face" and one season later in "Elements". She also returns as part of Gumbald's army in the final season.
• Bus Crash: Her skull can be seen in the bird nest in "Together Again", confirming that she died before Finn did.
• Cats Are Mean: Given that she's an assassin, she qualifies.
• Character Aged with the Actor: Me-Mow's ridiculous growth-spurt was probably inspired by her voice actress growing from about 10 to 14 between appearances.
• Cute Is Evil: She's rather ruthless for someone so small.
• Fan Art: How she started out.
• Hazy-Feel Turn: She goes from a Professional Killer to a Bounty Hunter. Despite the latter not being inherently illegal, she's still plenty evil, and wants revenge against Finn and Jake.
• Hypocrite: In her sleep she admits that she plans to double-cross Jake, but when she catches Jake trying to steal her antidote she cries out "Treachery!" before stabbing him with the needle again.
• I Got Bigger: She was originally shorter than Finn's knee. When she finally appeared again in "Angel Face", she's taller than Finn.
• Karma Houdini: The last time we see her, she escapes the war against GOLB.
• Killer Rabbit: Hard to believe that this little critter is a coldblooded assassin.
• Master Poisoner: Relied on poison when she was an assassin, because that's nearly the only way she could kill anyone. Even after her growth spurt, poison still appears to be her weapon. Having moved up from a poison-filled syringe to a blowgun that shoots poisonous snakes as darts.
• Manipulative Bastard: Forces Jake into killing Wildberry Princess for her under pain of death.
• Not Quite Dead: Appeared to have fallen to her death, but was shown to have survived.
• Orifice Invasion: She was small enough to crawl inside people's bodies and attack from the inside.
• Poison and Cure Gambit: When Jake goes against her orders to assassinate Wildberry Princess, Me-Mow doses him with poison and then orders him to carry out the assassination to get the antidote.
• Prehensile Tail: She's more than able to hold onto a branch with just her tail, or use it as another fist.
• Professional Killer: She was a second-class member of the assassins' guild, but was kicked out when she failed her full membership test.

Kee-Oth

Voiced by: Noah Nelson

A demon who created the Demon Sword with his own blood, which was taken by Jake's father, Joshua. He really, really wants his blood back.

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• Blood Magic: His power comes from his blood and the blood he drains from others. Finn uses this to trick him into killing himself.
• Hoist by His Own Petard: Finn kills him by exploiting his method of Blood Magic to trick him into inhaling blessed grape juice.
• Holy Burns Evil: Is injured and weakened by holy water. Finn kills him by tricking him into absorbing blessed grape juice.
• Killed Off for Real: At the end of "The Pit" he's gone for good. He wasn't sealed into anything this time.
• Oh, Crap!: Upon realizing that he just inhaled blessed grape juice.

Season 4

Goliad

Voiced by: Wendy Linehan

Another of Princess Bubblegum's experiments, Goliad is a candy-Sphinx built to rule the Candy Kingdom past Bubblegum's death. She soon turns out to be impressionable, with a questionable grasp of morals.

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• A God Am I: Not really a god, but the sentiment is there.
• Ambiguous Innocence: Sure, her endgame is evil, but there doesn't seem to be a smidgen of malice in her. Which only makes her creepier.
• Body Horror: Her third eye, which seems to unnaturally pop out of her forehead.
• Cain and Abel: Cain to Stormo's Abel.
• Complete Immortality: Implied by Princess Bubblegum, but we only know for sure she's The Ageless.
• Control Freak: After seeing how Jake treated the Candy children, she planned on treating the whole Candy Kingdom this way too.
• Corrupt the Cutie: Although it's implied that Goliad was unnaturally susceptible to it. Still, Jake was probably the worst person to leave in charge of her.
• The Corruptible: Any sense of innocence she had was completed corrupted just by seeing Jake snap at the preschoolers they're watching. Great going, Jake.
• Creepy Child: With an uncanny child-like voice coming from a huge monster and unstable psychic powers, she comes off as this.
• The Evils of Free Will: Her motive rant consists of her explaining that living things don't care for anything other than themselves, and that peace as we know it is a sham. Further, when she uses her psychic powers to get a child through an obstacle course, she demonstrated a belief that absolute control is the best way to get things done.
• Gone Horribly Wrong: With her powers and dedication to what she's taught, she had the chance to be the perfect successor to Bubblegum until Jake's bad leadership skills rubbed off on her and turned her into a power-hungry tyrant.
• Harmful to Minors: Some of the first things she sees are Jake getting violated by an entire preschool class, and his retribution.
• In the Blood: Probably inherited Bubblegum's single-mindedness.
• Lack of Empathy: She's a very young child, after all.
• Mind Rape: Tries it on Finn, who is able to hold his own for an admirable amount of time, before Stormo appears.
• Orifice Invasion: She stuffs a whole bunch of people down Jake's throat with her psychic powers, in imitation of a bunch of children doing the same to him earlier.
• People Puppets: Her main power is mind control.
• Physical Goddess: Has immense Psychic Powers and was made with the explicit purpose of being immortal. She's so powerful that Princess Bubblegum is scared if she threw a tantrum, she'd destroy the entire castle on her own and is so powerful the only thing that can fight her successfully is another of her kind.
• Psychic Powers: She has Telepathy and can make people levitate.
• Sealed Evil in a Duel: Bubblegum states that she and Stormo are forever locked in a psychic stalemate.
• Sibling Yin-Yang: To Stormo, and also to Lemongrab.
• Social Darwinist: "The weak bow to the strong, and such is harmony."
• Story-Breaker Power: Her psychic powers were so powerful that an equal and opposite force had to lock her in a duel for forever as otherwise she'd be far too powerful a force to beat.
• Telepathy: She can read minds.
• Too Powerful to Live: She has immense psionic power and were it not for Stormo, would've taken over the Candy Kingdom. As such Goliad never returns from her eternal duel (outside of a few comic appearances) since something that powerful would provide too big a challenge in future episodes.
• Unexplained Accent: Again as with Tree Trunks, her voice actor's British accent deviates from Ooo/Standard American for no in-universe reason.
• We Can Rule Together: She tries fervently to win Stormo over, but he isn't having it.
• With Great Power Comes Great Insanity: Due to Jake's improper tutoring she decides to take over the Candy Kingdom.

Season 5

Oozers

Humanoid creatures created in the aftermath of the Mushroom War, oozing green slime from all their orifices. They plagued Simon and young Marceline in their travels, and they're still around, awoken by PB, Finn, Jake and James.

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• Always Chaotic Evil: Their presence is evil enough to cause the Gumball Guardians to awaken.
• Body Horror: They are all bloated and deformed, but some are worse than others, such as some with holes in their chests or limbs growing out of their mouths.
• Not Using the "Z" Word: They are never once referred as zombies. Understandable, since the show has already introduced a totally different kind of zombie in Slumber Party Panic.
• Nuclear Mutant: A nasty result of the Mushroom War.
• Our Zombies Are Different: They are mindless humanoids implied to be humans mutated by the radiation of the Mushroom War who spread their condition to anyone they attack.
• Really 700 Years Old: They've survived to the present day, and many have escaped from the crater they were buried in.
• Sickly Green Glow: Their ooze.
• Was Once a Man: They appear to be mutated humans, given their presence in the city.
  • The appearance of James-like ooze monster seems to confirm this.
• Zombie Apocalypse: They appear to spread their affliction to those they attack. Including Candy People.

Big Destiny

Voiced by: James Kyson

The off-kilter leader of the Destiny Gang, a group of criminals in Farmworld.

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For more information, see Multiverse Characters

Maja

"Give up now, Princess, and I, Maja the Sky Witch, promise not to completely donk up your kingdom!"

Voiced by: Jill Talley

A.K.A The Sky Witch. She's the person Ash sold Hambo to in order to learn some useless spells. Marcie's since been trying to track her down to retrieve her doll.

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• Aborted Arc: Her introduction was suppose to lead into the plot of an Adventure Time movie where she was meant to have a bigger role. But that ended up getting shelved and what little plot they had intended was used in a scaled down fashion in "Something Big". After that, the writers didn't have much use for her and left her in a coma for the remainder of the series till the finale where she awakens... just in time to die for real.
• Art Evolution: Her second appearances gave more details to her eyes rather than the black dots she had before. This allowed for better expressions.
• Back for the Finale: She's brought, still unconscious, in the series finale to bring Normal Man and Magic Betty some extra magical power. Then she finally wakes back up a few seconds before exploding.
• Bad Boss: Sends her familiar to keep Marcie distracted which resulted in him getting beat up. When he comes to her stating he wants to quit after she succeeds in getting Bubblegum's t-shirt, she starts chasing him around her dwelling blasting him with magic. And she was in a good mood at that point.
• The Bad Guy Wins: In first appearance, she managed to manipulate Bubblegum into giving her her prized T-Shirt that Marcie had given in exchange for Hambo. While this allowed Bubblegum and Marcie to leave her house without incident, she claimed it as a victory for her since the T-Shirt had more sentimental value than the doll and was just the right component needed for her plans which she executes in "Something Big".
• Chekhov's Gunman: She was the witch that Ash mentioned selling Hambo to.
• Dark Lord on Life Support: She's rendered comatose from the battle in "Something Big", and the Ancient Psychic Tandem War Elephant decides to take care of her. They both reappear in "Flute Spell", probably more than a year later, and Maja hasn't woken up; the Elephant states she may be like that for the rest of her life. She finally woke up in the finale. Briefly.
• The Dreaded: The series doesn't elaborate on it too much due to her sparse appearances, but it's implied many of Ooo inhabitants steer clear of her if they can help it unless they want to make a deal with her. When Marcie found out she was the witch her ex-boyfriend Ash sold Hambo to, she went to Bubblegum for help as Marcie knew even with her powers she would be no match for her. Bubblegum herself doesn't even try to fight her, instead just negotiating a trade in return for the doll. Her second appearance proves exactly why when she summons Darren in her invasion of the Candy Kingdom and, though he was the main muscle through it, was likewise a major force as well and came dangerously close to winning. Only being stopped by a flaying strike from the Tandem War Elephant that knocked her out of the air and into a tree.
• Eldritch Location: Her home doesn't obey conventional rules of space.
• Emotion Eater: Her magic runs on sentimental value and caring. Thus she to takes over the Candy Kingdom for this purpose.
• Even Evil Has Standards: When summoning Darren, she tries to reign him back on outright destroying the Candy Kingdom since she needs Bubblegum for her plans. He doesn't listen and nearly killed Peebo, Maja actually looked quite horrified he was about to go through with it.
• Jerkass Has a Point: A partial example. She says that since Ash sold her Hambo, it is now legally hers, and, in-universe, this apparently holds up, leading Bubblegum to deal with the solution diplomatically. However, it's easy for the viewer to realize that it wasn't Ash's doll to sell in the first place, making the legitimacy of the deal questionable at best.
• Manipulative Bitch: Maja tricks Bubblegum into giving up the T-Shirt Marcie gave her. Later Maja says that Bubblegum had a stronger emotional attachment to the shirt than Marceline had to Hambo which is why Maja plans to use the shirt in a spell for "something big!"
• Not Quite Dead: Gets knocked into a tree after being blasted by the Tandem War Elephant which knocks her into a coma. Ironically said War Elephant is the one who helps her later.
• Phlebotinum Overload: Betty is so outraged by Ice King's attempt to stop her from using GOLB's power to save Simon that she supercharges Maja with her magic, making her skin glow blue and her hair green. A few seconds after Maja woke up and started to celebrate, she exploded, sending Ice King and Betty flying towards GOLB's mouth.
• Prim and Proper Bun: Has her hair tied up in a bun for the most part. Surprisingly she never unfurls.
• Psycho Electro: Abuses her familiar with electricity for little to no reason.
• The Sociopath: She randomly starts attacking her own familiar when she was in a good mood. Really says something when Marcie's not foolhardy enough to confront Maja on her own and asks Bubblegum to help her.
• Vile Villain, Saccharine Show: Next to The Lich and Ice Queen, she's one of the few threats on the show taken completely seriously. Marceline wasn't willing to confront her without Bubblegum's help and her attack on the Candy Kingdom put the whole kingdom on the defensive, even claiming the life of Root Beer Guy.
• Voice of the Legion: Constantly talks in a reverberating, demonic like tone.
• Weather Manipulation: She's able to generate wind and lightning.
• Wicked Witch: Is she ever, and she did it all to get an special shirt.

Wyatt

Voiced by: Andy Daly

One of Tree Trunks' ex-husbands, a miniature manatee with a penchant for being rather whiny and needy.

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• Amicable Exes: A somewhat one-sided one. Even after she divorced him, Wyatt still expresses the desire to get back together with Tree Trunks even when she makes it clear that it will never happen.
• Be Careful What You Wish For: His appearance in the Adventure Time: Fionna and Cake episode "Prismo The Wishmaster" has Wyatt attempting to make a wish to Prismo, but is too annoyed by the alarm sound Prismo's remote keeps making to think clearly. Because of it, Wyatt ends up wishing for quiet and ends up in a new wish reality called Ooofilm in the style of a silent black and white cartoon where he almost gets killed by a train and instantly regrets it while cursing at Prismo.
• Big Eater: Has tendencies of this, especially when it comes to Tree Trunks' pies.
• Butt-Monkey: Almost every one of his appearances has him suffer some kind of misfortune. He manages to be this even in the afterlife, where not only is he made to spend eternity in the first dead world tormented by monsters, but becomes its sole resident after Mr. Fox becomes the new Death and allows all the other souls trapped there except Wyatt to ascend to the higher levels.
• Fat Bastard: He's rather portly with a lousy and selfish personality.
• Jerkass: Downplayed. While he isn't actively malicious, he still isn't the most pleasant person to be around.
• Noodle Incident: He claims to Prismo that he did "terrible things" in order to get into the Time Room, but doesn't go into detail as to what they were.

Bella Noche

Voiced by: Maurice LaMarche

An evil anti-magical being summoned by Bufo, Laser Wizard, and Forest Wizard. He nearly destroys Wizard City before being stopped by Betty.

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• Anti-Magic: A being purely composed of it.
• Bilingual Bonus: His name is a mix of "Bella", Italian for "beautiful", and "Noche", Spanish for "night". Despite being male, the feminine "Bella" is used rather than the masculine "Bello", as the word being described, "Noche", is itself feminine.
• Bishōnen Line: His regular form is a massive face made out of green slime while his "true" form is a beautiful, androgynous humanoid.
• Crippling Overspecialization: His Anti-Magic powers mean that no wizard can hope to harm him. However, he doesn't have any other abilities, so a normal human like Betty can just cold-cock him with little effort.
• Power Nullifier: He can strip magical beings and objects of their power.
• Sinister Geometry: A massive black cube surrounds him. A failed attempt to destroy it makes it grow into more complex shapes.
• Small Role, Big Impact: His presence was the catalyst for Betty's arrival to Ooo, as his stealing of Ice King's magic turned him back into Simon, who used his regained sanity to create a time portal that Betty would use to get to the show's present time.
• Vocal Dissonance: His androgynous fully-powered form has the same deep, raspy voice as his weakened form.

King of Ooo

Voiced by: Andy Daly

The king of the Land of Ooo... except not really. In reality, he's a Con Man who claims to be the king of Ooo, and everybody believes him. Legally able to perform marriages. He takes over as princess of the Candy Kingdom in the Season 6 finale, before being deposed at the end of "The Dark Cloud".

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• 0% Approval Rating: The King of Ooo's Caligula attitude since he took over the Candy Kingdom finally bites him on the ass in this episode when the Candy People get fed up with his bullshit and revolt. Bonus Points for Crunchie knocking his ass into an open fire, causing him to melt into a puddle, and crawl away.
• Authority in Name Only: He doesn't seem to wield any real power at all. At least until he manages to usurp Princess Bubblegum's place in "Hot Diggity Doom".
• Bavarian Fire Drill: It's implied that the only reason people even believed he was a king is simply because he acted like one.
• Big Bad Wannabe: Despite taking over the Candy Kingdom and turning it into his own personal playground, he's still nothing compared to Orgalorg.
• Bizarre Alien Biology: He's made entirely out of earwax.
  • In "The Dark Cloud", Crunchy throws him into the fireplace and he melts into a yellow-brown blob.
• The Caligula: When he's become ruler of the Candy Kingdom via an election/coup the whole kingdom goes into chaos because of his total incompetence/inaction of being a ruler. The giant comet in the sky certainly sped things along, but there were signs of dissent even before it showed up.
• Creepy Crossdresser: After replacing Bubblegum as the Candy Kingdom ruler, he starts calling himself the "One True Princess", and not only wears dresses and feminine clothes, but also wears Bubblegum's old clothes.
• Cult: It's implied that he runs one, and that it's why he is an Universally Beloved Leader despite clearly being a criminal.
• Dirty Coward: He absolutely refuses to do anything to help stop the Dark Cloud and would much rather have his citizens abandon the heroes.
• Everyone Calls Him "Barkeep": Everyone Calls Him the King of Ooo.
• Faux Affably Evil: Generally, the King of Ooo maintains the appearance of a benevolent ruler. He does this by acting kind and amiable in front of his "subjects." However, this act is in order to exploit his followers for his personal use. This is seen in "Apple Wedding" where the King's dubious authority includes a clause in the wedding vows that would have made Tree Trunks and Mr. Pig his servants for five years. The true nature of the King of Ooo can be clearly seen in "Gold Stars" as he is willing to use Sweet P, an innocent child, for personal gain. In the episode, the King abducts Sweet P from his school and pretends to be his dance teacher. He then uses the boy to distract random Candy People so that he can easily steal their valuables. In addition to theft, the King of Ooo was willing to "take care" of Sweet P when the boy discovered that the King was merely a criminal.
• God-Emperor: Claims that the sun belongs to him.
• Hate Sink: Bar none the most unlikable character in the series. He's an obnoxious, sleazy, and thoroughly narcissistic Con Artist who proves to be as pathetic as he is woefully inept when it comes to actually ruling a kingdom. It's quite telling that even the Lich himself gets fed up with his personality and treats him to some well-deserved payback.
• Large Ham: Hammy as only the One True King/Princess of Ooo can be.
• Laser-Guided Karma: At the end of "Stakes" the Candy People finally turn against him for being a horrible ruler. The Banana Guards rebel against him and then Crunchy throws him into a fire place.
• Mugging the Monster: It really doesn't get much worse than trying to threaten the Lich into joining your two-bit schemes. Surprisingly, he got away without being killed, "merely" having his mind exposed to nightmarish Things Man Was Not Meant to Know.
• Narcissist: He fulfills pretty much all of the requirements to count as one. He shows a Lack of Empathy, and imperviousness to Shame (well, he thought he may be a bad ruler for a moment, but a moment later decided it's all Bubblegum's fault); he's a Consummate Liar and Manipulator; and has a Grandiose Sense of Self-Worth, apparently genuinely believing he should indeed rule all of Ooo.
• Screw This, I'm Outta Here: When he's trapped in jail with everybody that stood with him. He breaks out all by himself in a panic, claiming that his paperwork will never hold court.
• She Is the King: Inverted; at the end of season 6, he becomes the new princess of the Candy Kingdom.
• Tyrant Takes the Helm: When he becomes princess of the Candy Kingdom in Bubblegum's place, he makes everyone miss PB.
• Universally Beloved Leader: Seems to be the sole reason why people recognize his authority. He says he rules Ooo, and they all believe him. One of Bubblegum's goals is to prove that this is total bullshit.
• Unwitting Pawn: He's Orgalorg's during the Season 6 finale, who only helps King of Ooo to become the new princess to gain access to PB's rocket, which he would use to get to the Catalyst Comet.
• Villain with Good Publicity: He's a conman and fraud who only cares about himself and yet everyone in Ooo seems to think he should be in charge, much to PB's chagrin.
• Would Hurt a Child: Shows no hesitation in "taking care" of Sweet P when he finds out his plan.

Season 6

Darren the Ancient Sleeper

"This kingdom of candy... [...] I will lay it to waste, turn their people to salt... [...] and garnish a million meals with the salt, which we will eat for eternity."

Voiced by: Alan Oppenheimer

An ancient being of destruction awakened by Maja in "Something Big".

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• Attack Its Weak Point: As Eli says, "His weakness is his brain-seed!" Finn kills Darren by stabbing his exposed brain.
• Beneath the Earth: He emerges from this when Maja summons him.
• Blood Knight: In his own words, he only understands destruction, and only fights to the death.
• Botanical Abomination: He's an ancient, mysterious plant-like being that can tear open portals to other dimensions. It's implied that anyone who is killed by him is erased from all dimensions.
• Breath Weapon: He fires orange beams from his mouth.
• Death Seeker: His last words are to thank Finn when Finn strikes the blow that kills him.
• Fish out of Temporal Water: He has no idea what landmarks like the Candy Kingdom are and notes how different the world is since he has been asleep.
• Flunky Boss: He can summon from a portal flesh-colored regenerating humanoids that hatch from eggs.
• Friendly Enemy: He's pleased to see the Ancient Psychic Tandem War Elephant, although perhaps only because it's good to see a familiar face in a strange world. That familiarity doesn't get in the way of Darren trying to kill Eli at all either.
  Ancient Psychic Tandem War Elephant: Hi, Darren!
  Maja: The Ancient Psychic Tandem War Elephant?!
  Darren: Eli, were you asleep forever too? All this stuff is different now. What are we even doing here?
  Eli: Yes, it's been a difficult adjustment.
• Hero Killer: He's responsible for Root Beer Guy's death and nearly kills PB despite Maja telling him to not do it.
• Tom the Dark Lord: He's a powerful, destructive creature named Darren.
• When Trees Attack: His mouth even resembles a pine tree.

Rats

Rat King

Voiced by: James Urbaniak

As his title implies, he is the King of all rats that live in Finn and Jake's Tree, gnawing at its roots. He is encountered by Kent in his quest to defeat a bad guy. Normally appears as a normal rat with a crown, but can take on the nightmarish form of a Giant Rat Head and cape on top of a Swarm of Rats.

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• Creepy Monotone: A high, but eerily calm and soothing tone... it almost never breaks unless he's attacking or being directly hit.
• Karma Houdini: Gets away alive but with broken teeth, but stopping his gnawing allows the Tree House to bloom for the first time. Since a rat's teeth can grow back very quickly, it's likely he'll be back.
• My Species Doth Protest Too Much: A villainous version, all the other Rats in the same episode appear to be nice enough to not fight Kent, and are just protecting the materials needed to make the strongest sword the Blacksmith can make; compare this to his direct hand in draining the Tree House's power by eating away at it.
• Nothing Is Scarier: Similar to the Lich, Rat King has no funny moments when he appears, and seems to be in a creepy sort of control. His motivation is never explained, and neither are his powers or his origin. There's also the fact that he resides in some sort of otherworld inside of the tree and takes the form of a disembodied head on top of a mass of rats.
• Power Parasite: He seems to have gotten his power from leeching off the Tree House itself, judging by his first scene.
• Red Eyes, Take Warning: Has red eyes and is a dirty rat.
• Shout-Out: His Head-on-a-Cape form is similar to Nightmare, just like Kert is to Kirby.
• Swarm of Rats: His second form, which also means that He's Nigh-Invulnerable to blows to his body.
• Truth in Television: Rat Kings are a real kind of monster from Medieval times (mostly around the time of the infamous Black Death epidemic, and becoming less frequently reported as time went on) created when poo managed to fuse groups of Rats into a knotty clump by the tail. They were considered horrible omens, and real-life examples of them can be found in British Museums (although their authenticity is debatable, to say the least).
• We Can Rule Together: Offers this to Kent, who of course refuses.
• The Worm That Walks: His second form, which for added creepiness, is usually encased in shadow unless some form of light is brought directly to it.
• You Dirty Rat!: A more menacing version than most though.

Mouse Wizard

Voiced by: Tom Kenny

A mouse living in the Tree House, who wears a robe and is encased in a crystal. He guards the Unbreakable Ore (a bottle cap).

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• Black Cloak: The robe he wears is black.
• Just a Stupid Accent: Has an Indian accent.
• Mineral Macguffin: The "unbreakable ore" which in reality is just a bottle cap.
• Secret Test of Character: Offers the crystals in his room to Kent thus offering him the chance to live out his days in comfort; he's briefly entranced, but states that he didn't resist greed so much as he doesn't care about money. Rat Wizard thinks it's weird but gives him the Ore anyway.

Mouse Knight

Voiced by: Tom Kenny

A British-accented mouse in armor who wields a large sword, he guards the mystic earth (which appears to be just a mud clod mixed with his spit).

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• BFS: Has one with a pointed end to keep the rest of the blade from touching the ground.
• Just a Stupid Accent: British accented.
• Knight in Shining Armor: Doesn't fight Kent because at the time Kent had no sword to fight with, and instead does his Secret Test of Character.
• Totally Radical: Says "Yo' Holmes that's cold" when Kent states he doesn't care about love.
• Secret Test of Character: Offers the hand of one of his daughters to Kent as his.

Mouse Thief

Voiced by: Tom Kenny

A mysterious and to-the-point Rat wearing a black outfit that resembles Ninja garb. He protects the Sacred Flame (a blue firefly).

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• Gratuitous Ninja: Possibly, seeing as the other two guardians are more classical in tone (a wizard and a knight). He does complete the classic trinity, however.
• Maybe Magic, Maybe Mundane: Unlike the things the other two Rats were carrying and offering (with the materials being mundane looking), the firefly he offers appears to be magical, glowing a deep blue and actually being used as a forging fire.
• Secret Test of Character: Offers Kent water from a spring of immortality as his.
• The Stoic: He is calm and unflappable.

Season 7

AMO

Voiced by: Thu Tran, Chuck McCann (when disguised as Moe)

The prototype to BMO, who was designed to receive love rather than give it.

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• All Take and No Give: He was designed to receive love, not give it. He expects everyone to obey him and only him. If someone else is given affection, or his orders are ignored, he takes it as a sign that the person offending him doesn't love him and needs to die.
• Bottomless Magazines: Equipped himself with a weapon that materializes cannonballs out of thin air.
• Cain and Abel: He's the murderous Cain to BMO's Abel, trying to kill him outright when his trap failed. He also arranged for all of his other MO siblings to go through the same trap which compacted them into a single cube which named All-Mo.
• Cast as a Mask: Voiced by Chuck McCann when pretending to be Moe, and Thu Tran when he drops the disguise.
• Dead Guy on Display: A thousand years after his death, AMO's dismantled remains are kept in BMO's house in Mount Cragdor.
• Disney Villain Death: Knocked off a cliff from the recoil of his weapon when BMO grabbed it.
• Evil Counterpart: He's BMO's opposite, a robot meant to receive love but not give it.
• Expy: Of Lore as a Psycho Prototype older brother to a show's main robotic character.
• It's All About Me: You must pay attention to him at all times, doing exactly what he wants. Because if you don't, that means you don't love him enough.
• Killed Off for Real: While we never see him die on-screen, we get a scene of his heart de-powering after he falls off the cliff. He never comes back alive after his debut episode, only appearing in a nightmare as well as a corpse when BMO somehow managed to collect his body 1000 years in the future and appears to be in the process of repairing him.
• Killer Robot: Essentially what he became.
• Meaningful Name: He's amoral. Also an Ironic Name, as in Italian and Spanish "amo" is the first person present conjugation of "love" as in "I love", while AMO was built to be loved.
• Psycho Prototype: He was a MO designed with a complex motive of love before BMO, but he became a Yandere.
• Yandere: Oh big time. He just needs to receive love (returning it is very secondary), and he never has enough.

Bandit Princess

Voiced by: Amy Sedaris

A ruthless thief who kills people and steals their gold.

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• Bad People Abuse Animals: She kills Box Prince.
• The Bus Came Back: Returns as part of Gumbald's army.
• The Corrupter: It's implied that she was one of the reasons why Fern became evil after the time he spent with her as Finn Sword.
• Freudian Excuse: According to her, the reason why she became a bandit is because she was born with rabies and her parents never loved her.
• Jerkass: Oh yes. She's a relentless sadist that commits crimes for no reason and even ridicules Finn after he accidentally stabs Finn Sword.
• Karma Houdini: After Finn faints after stabbing the Finn Sword, she runs away and gets away with all the crimes she had committed for the rest of the episode. On top of that, she escapes the war against GOLB completely untouched.
• King of Thieves: Calls herself a bandit princess, but it's unknown if she's a real princess or not.
• Small Role, Big Impact: Appeared in one episode, but her actions resulted in the creation of Fern.
• Villain Team-Up: With Gumbald.

The Vamps

General Tropes

The main antagonists of the "Stakes" mini series. Sometime after the Mushroom Wars they preyed upon the last of the human survivors. Marceline opposed them and killed them all to protect her newfound friends. Though in the process due to her soul sucking powers, gained their abilities as a result after killing them. In the final battle against the king, he bit her and changed her into part vampire to ensure his kind lived on.

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• Death by Irony: The vampires devour humans, but eventually end up devoured themselves by Marceline.
• Divided We Fall: When they were revived, Empress, Hierophant and Moon disagreed with the Vampire King on how to continue their kingdom and went their separate ways.
• The Dreaded: Being vampires, Jake is terrified of them as they're the few creatures he mentioned will absolutely kill him and Finn should they encounter them. Demonstrated when each one sans The Fool easily manhandles the duo with each encounter.
• Last of His Kind: Marceline had all but wiped them out, so in turn, the Vampire King turned her into a vampire to make sure his kind still lived on.
• Looks Like Orlok: The hordes of lesser vampires are composed of bald, pale humanoids with pointy ears and a more hunched stance.
• Only Mostly Dead: Despite the fact Marceline staked them and ate their souls, they could be revived should she have her vampire essence extracted from her.
• Sealed Inside a Person-Shaped Can: All of their vampire essence is contained within Marceline after she defeated them. So when Bubblegum used her machine to turn her back into a regular half-human demon, the black goop that was her vampire essence allowed them to escape and revive, kicking off the mini-series.
• Tarot Motifs: Their names reference four of the Major Arcana. They're all meaningful in some way to their characterization and their respective cards' inverted positions can be related to their downfall.
  • The Empress represents beauty, femininity and abundance; she is the most traditionally feminine of the group, the most irate about the decadent standards they used to have and is regarded as highly beautiful by Ice King. Inverted it represents a dependence on others, something exemplified by her MO of enthralling people to serve her. Ultimately she is defeated when the I Work Alone Marceline receives some much needed assistance from her friends after the Empress abandons Ice King.
  • The Fool represents innocence, spontaneity, and free-spiritedness; The Fool himself acts like an incautious, carefree child. The reverse position can reference a disregard to obvious dangers, befitting the Fool's Too Dumb to Live personality. Marceline herself acts very foolhardy when she elects to go after all the vampires by herself, starting with the Vampire King first before being distracted with the threat of the Empress against Ice King.
  • The Hierophant represents institutional wisdom, religious teaching, and traditional belief systems; this one is the most traditional vampire, beholden to the old ways such as Must Be Invited. Jake meanwhile completely relapses into his intense vampire phobia. In a reversed position it indicates a downfall by an inability to adapt, with the Hierophant being very slow and irate about technology and ultimately destroyed by his upholding to old vampire standards.
  • The Moon represents dreams, deception, and illusions; she is found sleeping, looking deceptively harmless with some ambiguity regarding how much of her abilities are being deceptively hidden, poetically described or literally explained. There is a lot of dreaming by Marceline in her episode. Reversed it represents confusion, regarding the Poor Communication Kills that also occurs in her episode and everyone's baffled fear regarding her, as well as her own death through a sudden, expected ambush from nowhere.
  • The Vampire King at first seems to buck this trend, but throughout the series could be seen as representing several Major Arcana himself. Pre-death he could be seen as The Emperor, as the king of the vampires, but need to keep the vampire race from dying out allowed him to willingly sacrifice himself to Marceline to turn her into a vampire. After being revived, he mentioned the Wheel of Fortune by name (and the creators have insinuated that is the king's Arcana, at least during the adventure), he had the incredible good luck to be revived, and like the wheel is reliving the same cycle looking for a turning point to escape it, however due to incredibly bad fortune (the bucket with his vampire goop being spilled out) his dark essence is released into the world. Even post-devampirism the king now transformed back into a lion could be seen as The Strength, through personal strength, courage, and patience he has been cured of the vampire curse, and although he doesn't die, due to his weakness and lack of self-discipline from being returned to a normal lion, he offers no assistance against the dark cloud that is the physical manifestation of that curse.
• Vampires Hate Garlic: Garlic harms them, as the Hierophant has very mild burns when Peppermint Butler throws garlic cloves at him. Furthermore, garlic is the main weapon used by Princess Bubblegum's team in the universe seen in the "Fionna and Cake" episode "The Star", and that world's version of Huntress Wizard similarly uses garlic bulbs in her arrows.
• Vampire Variety Pack: Each have their own unique abilities and features. The only traits that they all share are their grey skin, Pointy Ears and sharp teeth.
• You Kill It, You Bought It: Sort of; when Marcy killed them she sucked in their souls which granted her their abilities. Though it's implied if she didn't, they would reform eventually. In a more straightforward manner, killing the Vampire King is what made her the Vampire Queen.
• Your Soul Is Mine!: They after they were staked, their souls were eaten by Marceline, giving her access to their abilities.

The Vampire King

Voiced by: Billy Brown

The king of the vampires, the strongest of their kind and the one who turned Marceline into a vampire.

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• Affably Evil: He's polite, eloquent, and sophisticated despite being a ruthless vampire. Although it's subverted in the present day, where he's decided to pull a Heel–Face Turn and end his vampirism.
• Almighty Idiot: His extracted vampire essence seems to have become this without a host body, going on a mindless rampage and unable to respond to Marceline's attempts to talk to him. The remnants of his personality only speak to Marceline within her mind after his essence is absorbed by her.
• Anti-Villain: He's a Reasonable Authority Figure who's only really interested in ensuring the existence of his people, to the point where he has no qualms with dying if Marceline became a vampire in his stead.
• Arch-Enemy: To Marceline, even called such in the episode description.
• Bait-and-Switch Boss: An unusual example of this. The Vampire King is set up to be the last enemy of the Stakes mini-series, but he ultimately doesn't want to harm anyone and only fights back when he's attacked first. He successfully convinces everyone to remove his vampire essence as he no longer wants to be a vampire and trapped in a cycle of Eternal Recurrence. It's his extracted vampire essence that ends up being the Final Boss of the Story Arc when the heroes carelessly mishandle the container holding it.
• Being Evil Sucks: As he points out, being an immortal vampire has left him trapped in a state of Eternal Recurrence battling against the forces of good and preying upon innocents. When he's revived, he decides to Screw Destiny and change his ways rather than stagnate forever.
• Big Bad: Of the Stakes story Arc. More of a zigzagged example since he doesn't actively antagonize Marceline in the present day. He actually wants to get rid of his vampirism and allows PB to remove it. However, his vampire essence is accidentally released and becomes the Final Boss of the arc.
• Death of Personality: Curing his vampirism turn him back into an animal that shows no signs of sapience or memory of his time as a vampire. He had no problem with it as living for centuries wasn't really working out for him. Seemingly the only bits of his intelligent mind stayed with his vampiric essence and ended up back inside Marceline.
• Defector from Decadence: Part of the reason he lets his group disband. Their old way of doing things as a horde lead to their extinction. He's partially irritated at the Empress' suggestion they get back to their old standards like blood with gold-flecks in it, as it didn't add any flavor.
• Good Running Evil: The Vampire King is the only vampire before Marceline who is, if not outright good, at least very thoughtful and pragmatic. He only considers drinking blood as a means of subsistence, not something to indulge in, and doesn't speak condescendingly of their victims. Once he discovers there's a way to stop being a vampire, he decides to use it.
• Humble Goal: Before coming Back from the Dead, he just seemed concerned with making sure his species would continue to exist. He was fine with dying so long as Marceline would be the last vampire in his place.
• Karmic Jackpot: Upon his revival it's only he who actually wants to change for the better (even the Fool was content just let things be as they were), and as such he's the only one not eaten by Marceline and is free from the Eternal Recurrence.
• King of Beasts: A lion and Vampire Monarch.
• Large and in Charge: Largest vampire in the group.
• I Let You Win: Implied. The Hierophant speculates the only way Marceline would've beat the Vampire King would be that he let her beat him for one reason or the other. This turns out to be true, when Marceline is unwilling to side with the Vampire King, he decides that there would be no other way to best ensure the survival of his species than by turning Marceline even if it would cost him his body and soul. When another fight is attempted when he is revived, the Vampire King makes it known he will not give her a fight- though he wants her to listen to what he has to say.
• Man of Wealth and Taste: Wears a fine-looking white suit.
• Making a Splash: At one point he manipulates water.
• Mind over Matter: Demonstrates telekinetic abilities.
• Minor Major Character: More so than any of the other vampires, he's the reason Marceline turned into the Vampire Queen in the process would ensure she would live long enough to be healthy and capable by the time she appears in the series. Otherwise, she would've been old and decrepit like Farmworld Marceline. He doesn't even appear until the seventh season, and only then only a few episodes out of the mini-series.
• Mix-and-Match Critters: A large vampire with the head of a lion, lizard-like claws for hands, and bird talons for feet. The effect almost makes him resemble a humanoid chimera or manticore. He may be based off of a Lamashtu, a female bloodsucking demon from Mesopotamian mythology that has similar traits.
• Nigh-Invulnerable: During his first encounter with the main characters, he is unflinched as he deflects each of their effort to 'kill' him. One by one. Marceline is only able to stop his final rampage because he became a walking mountain-sized cloud of smoke and she was able to absorb him from the inside.
• No-Sell: When the Vampire King first appears before the main characters, he effortlessly stops every attempt to stake him while also attempting to explain what he wants.
• Not So Above It All: Despite being a stoic and imposing Vampire Monarch who everyone sees as the Big Bad, he has a few silly moments such as his unflinching Instant Soprano after being kicked in the groin and when his grand speech leads to him splashing around in water wearing only briefs. In the case of the latter, he becomes so consumed Chewing the Scenery that Marceline has to shout at him and remind him what they were talking about beforehand.
• Odd Name Out: The Vampire King is the only vampire not directly named after a Tarot card, though his name is analogous to The Emperor, while his slightly more monstrous design and desire to escape the chains of fate and the endless cycle of fighting, death and rebirth that comes from being a vampire evokes The Devil card. His grandiose speech also name drops Wheel of Fortune and The Chariot. His true form as a lion may also evoke The Strength card (which is typically depicted as a woman and a lion) not to mention as the king he is the strongest of the vampires.
• Offstage Villainy: Marceline tells the Vampire King that he's done enough to deserve getting staked a "thousand times over", but we never see what he's done to warrant such a claim in the flashbacks. The few bad things he's shown doing at least had an understandable purpose (turning Marceline into a vampire was done so vampires didn't go extinct, and feeding on animal blood was done as a substitute for normal vampire sustenance).
• Pocket Dimension: Travels unknown means created an invisible space that filters out sunlight.
• Raising the Steaks: He is a lion that was turned into a vampire.
• Reasonable Authority Figure: Unlike most vampire villains he's a very calm and reasonable person. He spends his fights with Marceline trying to sincerely reason with her and exhibits none of the sadism typical of vampire big bads. He isn't even a Bad Boss, simply letting his group disband on their own separate ways when their differences prove irreconcilable.
• Reformed, but Rejected: After his reappearance he tries to find a way to change his way of life and talks with the main characters. It took one night of deflecting their attacks and making a grandiose speech to 'consider' listening to him.
• Retired Monster: Fionna and Cake reveals he was active preying on humans in the aftermath of the Great Mushroom War, and going by how he evilly behaves when granted freedom from sunlight, free reign for his kind to expand and feed, and a adoptive daughter, odds are he used to be a truly monstrous individual before he eventually mellowed out upon facing Marceline.
• Sole Survivor: Unlike the rest of his court, the Vampire King survives the events of "Stakes" after he is turned back into a lion. At this point however, he doesn't have his original personality and is just a regular lion.
• Super-Reflexes: Manages to catch a stake Princess Bubblegum fires at him with his hand.
• Took a Level in Kindness: Offscreen Villainy aside, compared to the monarch who challenged Marceline in a duel to ensure vampires would live on one way or the other, Vampire King is much more content to become a Vegetarian Vampire upon his resurrection, even eventually willingly surrendering his essence to be free of the cycle he found himself trapped in.
• Uplifted Animal: He was apparently a non-sapient animal before becoming a vampire. And appears to go back when he stops being one.
• Vampire Monarch: The Vampire King.
• Vegetarian Vampire: After resurrection, he elects to eat only animals like everyone else.
• Villain Has a Point: Eventually dissuades Marceline from attempting to stake him again by pointing out the Eternal Recurrence that mortals are ignorant of, and acknowledging things are doomed to repeat if nothing ever changes. She reluctantly accepts his points.
• Villain Teleportation: Disappears and reappears elsewhere.
• World's Best Warrior: He's considered the most powerful vampire outside of Marceline herself, the Hierophant speculates that she couldn't have beaten him the first time if he didn't want her to, and he's right.

The Empress

Voiced by: Rebecca Romijn

A vampire who prefers the finer things in life. She has the power to hypnotize people with her gaze and turn invisible.

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• Conspicuous Consumption: Wants to go back to the decadence she's used to, like drinking human blood with gold flecks in it.
• Hypnotic Eyes: Has these when she pulls back her veil. Her blue eyes resemble vinyl discs and they turn red when she's using them.
• Invisibility: One of the powers she possesses and the main power Marceline gains from her when she's defeated.
• Snakes Are Sexy: She has a snake Animal Motif and is rather attractive.
• The Vamp: Attractive and uses her feminine wiles to make Ice King her pawn.
• Noodle Incident: Simon's mentioned to have at least met the Empress at some point in the past, but this is never elaborated on or touched upon. Including how Simon was freed from that situation as he was not with her when Marceline first killed her.
• Villainesses Want Heroes: The Empress states she used to see the appeal of Simon before he fully became the Ice King, stating he was a Silver Fox and that he was happier as her slave. The details of the situation are never elaborated on.
• You Have Failed Me: Once she realizes Ice King wasn't really controlled by her powers, she pretty much disowns him as she deems him too stupid for a servant.

The Fool

Voiced by: Ron Funches

A relatively harmless vampire who seems completely detached from reality. He has the power of flight.

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• Affably Evil: While The Fool still sucks people's blood, he lacks any true maliciousness and both times he encounters Marceline he acts as if he is talking to an old friend instead of a vampire hunter determined to kill him.
• Flight: His main power and what Marceline gains from him when he's defeated. He spends all his time off the ground.
• The Imp: He's practically non-malicious. All he does is float around cracking jokes, treating everything like a game.
• Informed Ability: He's regarded as a powerful vampire by Marceline despite never being shown doing any actual fighting and getting himself easily killed twice.
• Meaningful Name: Tarot symbolism aside, he makes it pretty clear he doesn't have a lot going on upstairs.
• Too Dumb to Live: Not exactly one for self preservation. Both times, he's the first one to get staked because he doesn't bother to protect himself.
• The Tooth Hurts: He lost one of his fangs in a box turtle prior to getting killed the first time. He gets it back after resurrecting, only to lose it again from the Vampire King forcefully kissing him.
• Undying Loyalty: The Fool is only one not to abandon the Vampire King when the others disband. Justified, as he is too dumb to think for himself unlike the other vampires.

The Hierophant

Voiced by: Paul Williams

A vampire obsessed with following tradition. He has the power to shape-shift.

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• Big "NO!": Screams one of these when he's shoved inside Jake and realizes he wasn't invited.
• Enemy Mine: He tries to make one with Marceline to take down the Vampire King. It fails due to the Hierophant's refusal to give up drinking blood.
• Fatal Flaw: The Good Old Ways are, both metaphorically and ultimately literally, his fatal flaw. He's completely stagnant in his mindset to change when the five are revived due to unforeseen circumstances, leaving him unable to come to an agreement with Marceline and co. It also spells his doom when he accidentally breaks one of his own rules. Marceline even lampshades this, considering him to be "too old-fashioned for his own good".
• Full-Boar Action: He changes into a vicious-looking wild boar more than once.
• Good Old Ways: The Hierophant left the Vampire King because he refused to go back to the old ways of vampirism. Although he still follows Adventure Time rules, taking this attitude to silly extremes ("What is all this tacky plastic rubbish?!") and peppering his speech with odd bits of slang despite being "old-fashioned".
• Hoist by His Own Petard: He's incredibly proud about following the Good Old Ways... and ends up disintegrating when he's accidentally knocked into a house-shaped Jake without being invited in.
• Horned Humanoid: Has flesh-colored horns in his default form.
• Magic Pants: Can completely shift his clothes around as well with the specific exception of his boots.
• Morphic Resonance: He can't lose his mustache... or boots, for whatever reason.
• Must Be Invited: The only example of this among the vampires, for some reason. Pep But calls him an "old-timey Revenant", implying that there are different subspecies of vampires with different rules.
• One-Winged Angel: Turns into a horrifying amalgam of animal parts when fighting the crew.
• The Starscream: After all the vampires go their separate ways, the Hierophant is the only one to actually plot against the Vampire King.
• Undignified Death: Gets disintegrated after being accidentally pushed into the house-shaped Jake uninvited because he stubbornly refused to let go of the Good Old Ways of vampires. Considering how he takes great pride in following the old ways, this would definitely be seen as the most humiliating way to die for a vampire.
• Voluntary Shapeshifting: His main power and what Marceline gains from him when he's defeated. He mostly uses it for weapons if not disguising himself.
• Weaksauce Weakness: His adherence to old-school vampire rules means he has all the vulnerabilities of one.

The Moon

Voiced by: Beau Billingslea

A mysterious, silent vampire. She has the power of regenerative healing.

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• Dissonant Serenity: As Finn notes, she maintains a calm smile even as she's pursuing him and Jake at high speed.
• Early-Bird Cameo: The Moon appeared in the "Adventure Time 2015 Halloween Spooktacular" comic which depicted Marceline's fight against her before making her first appearance in the show itself.
• Eaten Alive: In contrast with every other vampire, Marceline actually swallows her, soul and all, while she's still alive.
• Evil Sounds Deep: When she finally does speak, it's a very deep demonic voice.
• Good Thing You Can Heal: Her main power and what Marceline gains from her when she's defeated, she has very strong healing. The Fool refers to her as a "backwards egg" because a simple crash on the head completely caves it in before her healing restores her. Even dragging her into the sunlight doesn't do anything.
• Humanoid Abomination: Something of an homage to the more eldritch versions of vampirism. No tentacles, just a lot of really weird powers and some unknown affinity with the actual moon in the sky.
• Just Toying with Them: Finn notices when she's chasing after Jake and him that she doesn't really seem to be picking up speed, coming to the conclusion that she's just messing with them.
• Lunacy: Her name aside she implies that her power is connected to the moon but it's ambiguous if she was being literal or poetic. There is some credence to in vampire lore (the title character of The Vampyre was another Daywalking Vampire who was simply stronger in moonlight) but it's pretty obscure.
• Nigh-Invulnerability: She's nearly impossible to kill, Finn and Jake stake her several times while she's sleeping and even drag her out into the sunlight. Nothing works. She only goes down because Peppermint Butler manages to incapacitate her with a tree trunk-sized stake to the back, with Marceline absorbing her while she's still alive.
• Nothing Is Scarier: The creepiest thing about the Moon is the fact that so little is known about her and her abilities. When she tells Finn and Jake that they "walk in the path of her light", she refuses to answer Finn's question on whether she's being literal or allegorical. Her paralyzing abilities as well as her apparent ability to unlock a hatch just by repeatedly yelling "pigs" is given no explanation at all, and Marceline was in no condition to tell the heroes about her abilities. This gives her a huge advantage over the heroes, who are unable to stop her when she arrives at the castle and Princess Bubblegum only manages to stall her by locking herself and Marceline in a hatch. It took a sneak attack from Peppermint Butler via a large stake to the back to stun the Moon long enough for Marceline to absorb her alive.
• The Paralyzer: She's able to force Finn to collapse and become barely able to move, as well as paralyzing Jake, all without apparently doing anything at all. This could be related to her power over the moon, as they're standing in its light.
• Reality Warper: Downplayed, but things seem to just... happen when she wants them to. Paralyzing her enemies, melting the chocolate off the Banana Guards' heads, or forcing complicated locks to open on their own, it all occurs with no apparent action or effort on her part.
• Refuge in Audacity: Unlocks a safe just by repeatedly yelling the word "pigs". Bonnibel is understandably confused.
  The Moon: PIGS! PIGS!! Ha ha ha ha.
  PB: Did you just yell "pigs" at the lock until it opened?
• Stringy-Haired Ghost Girl: A dead ringer for one, except with a dark tunic instead of a white kimono.
• The Quiet One: Rarely utters a word while with her company. It isn't until she's chasing Finn and Jake that she finally speaks.
• Unusual Ears: A single bat-like one in the middle of her forehead. Marceline describes her as having "a head like a garden trowel".
• Vocal Dissonance: She's small and looks like a Stringy-Haired Ghost Girl, but her voice is incredibly deep and echoes with a Voice of the Legion. Lampshaded by Jake when she finally speaks.
  Jake: That's her voice?!
• Who's on First?: PB instructs them to "[guys] take her back" to Peppermint Butler's poison lab but they mishear it as "stake her back" which is completely ineffectual. Turns out that Peppermint Butler staking her back with a large enough stake was enough to immobilize so Marceline could suck up her essence.

Season 8

Patience St. Pim

Voiced by: Lauren Lapkus

A woman from before the Mushroom War who is the newest Ice Elemental. She froze herself before the bombs fell and was unfrozen by Ice King, Finn, and Jake. She wants to be friends with the other elementals (PB, Flame Princess, and Slime Princess) but they don't like her since she had the Ice King kidnap them.

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• Ambiguously Evil: She's trying to make friends with the other elementals and teach them to use their powers, but the lengths she'll go to do such things are quite extreme and her ultimate plans seem uncertain.
• Be Careful What You Wish For: Patience reached the apex of her power as the Ice Elemental, and like the others was overwhelmed by the emotions associated with her element (despair and ennui), thus literally incapable of enjoying it.
• Big Bad Ensemble: Of Elements, alongside Betty and Princess Bubblegum, under the virtue of being the reason the elemental princesses get overwhelmed by their powers and wreak havoc on Ooo.
• Does Not Like Men: She makes a comment which implies that she regards the current female elementals as an improvement over the male ones she had in her day. This could be a remark on how her contemporaries were less proactive than she was, however.
• Elemental Embodiment: The reincarnated Ice Elemental from before the war.
• Gone Horribly Right: She managed to complete her spell to put herself and the elemental princesses in full touch with their power, but like the others was overwhelmed by the emotions associated with her power.
• Human Popsicle: How she survived the Mushroom War. At the end of the "Elements" mini-series, she does so again.
• Humanoid Abomination: After casting the Elemental Spell.
• An Ice Person: As the Ice Elemental, her powers far outstrip the Ice King's both in raw energy and complexity. Note how smooth and clean-looking her ice constructs are.
• Ironic Name: Her name is "Patience" but she is extremely hyperactive.
• It's All About Me: Everything she does seems to be rooted in selfish motives. Even awakening the other elementals seems to have been in service to her nebulous plans.
• Karma Houdini: Ends up screwing Ooo over big time, however never faces any comeuppance for it. She just ends up freezing herself so she can try again in the future with the opening of "Come Along With Me" showing her still frozen. The only thing that is shown in her chronological last appearance is that she is now depressed instead of happy. Though if the flashbacks from Ketchup are to be believed, she did suffer a MAJOR ass-kicking from Marceline before the Vampire Queen fully succumbed to candification.
• Meaningful Name: Mirroring Urgence, she never has to deal with a situation quite as dire, and spends hundreds of years encased in ice. This doesn't extend to her personality, though.
• Punny Name: Of 'patience of a saint.'
• Reincarnation: As the ice elemental, she's Urgence Evergreen's reincarnation.
• Took a Level in Badass: When she awakens in Ooo, with a lot more magic around than there was pre-Mushroom war, she's significantly more powerful, able to ice circles around Ice King despite him having 1000 years to learn how to use his power.
• With Great Power Comes Great Insanity: When she learns about how much more powerful magic has become, she goes giddy over it, and never quite comes down from that high. She then uses her magic for very morally questionable and dangerous purposes.

Dr. Gross

Voiced by: Lennon Parham

A living, contemporary human from "the island", obsessed with cybernetics and building strange animal hybrids.

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• Ax-Crazy: What would you call a Mad Scientist who has done dozens of twisted experiments and tries to mutilate a child to use him as raw material?
• Benevolent Boss: When Tiffany becomes her henchman she treats him surprisingly well, giving him a prosthetic arm after his near-death experience of being eaten by the Worm Queen. When Tiffany objects to Dr. Gross killing Finn and Jake as they're his friends, she reassures him that she'll splice him a dog-boy hybrid to be his friend. Even when he turns against her to save them, the worst she threatens him with is a write-up.
• Cyborg: 60% of her body is advanced prosthetics, with limbs that can telescope and morph into tools and weapons. And it's implied all this was self-inflicted.
• Dissonant Serenity: She is disturbingly sweet and never loses her composure, even when she is being sadistic.
• Evilutionary Biologist: She earnestly believes that evolution is too slow, and that all the living beings in the world would be so much better if she just could... "level them up".
• Faux Affably Evil: She's initially quite friendly, giving Susan, Finn and Jake a tour of her lab with a pleasant Villain Song, but her friendliness quickly dissipates when Finn makes it clear they don't want to be turned into cyborgs like her.
• Genki Girl: A villainous example, she's unusually cheerful and peppy despite her lack of ethics and twisted experiments.
• Greater-Scope Villain: Of Islands. Her actions are more or less what drove Minerva to become a Well-Intentioned Extremist.
• Humans Are the Real Monsters: Basically, in a show inhabited by strange creatures, humanoids, Eldritch Abominations, demons and aliens; this woman (a mere human) manages to be one of the cruelest, most evil characters. That said this is downplayed as Gross herself isn't purely human and her drive to be more than human is what makes her so monstrous, while partial or fully human characters like Finn, Ice King, Marceline, Betty, and Susan are sympathetic and likable. And that's not even mentioning beings like the Lich, Ricardio, and Warren Ampersand who are just as if not more vile than her while not being remotely human.
• LEGO Genetics: Her second specialty is making hybrids. Animal-animal crosses aren't the least of it: among other things, she's somehow managed to splice a flan pudding with the common fly.
• Meaningful Name: She is named after a nazi and is a very morally dirty person.
• Mike Nelson, Destroyer of Worlds: She accidentally created a catastrophic plague that killed lots of people and ended up turning Minerva Campbell into the kind of being that she is nowadays. Although she doesn't seem to have learned much from her mistake.
• A Nazi by Any Other Name: Her name and title is eerily reminiscent to Heinrich Gross, an Austrian psychiatrist and Nazi war criminal who used the same methods as Dr. Gross.
• Not-So-Well-Intentioned Extremist: Despite claiming that everyone will be better if they all become cyborgs like her, which sounds noble on the paper, this quickly falls flat when you realize she forces everyone, whether they're consenting or not, to transform into cyborgs out of egomaniacal delusions.
• Obliviously Evil: Gross seems to believe her experiments are improving life rather than as crimes against nature, and is earnest enough to sway some to her side like Tiffany.
• Pet the Dog:
  • Despite her cruelty she didn’t hesitate sending Susan to find Finn when she was told he was missing
  • She's also generally pretty nice to Tiffany, taking him in as assistant and providing him with a cybernetic arm after he lost one from a giant worm. The epilogue might imply that Dr. Gross continued to care for him even after his betrayal and the lab's destruction, as he's shown with a cybernetic eye resembling her own.
• The Reveal: She's a genuine present-day human, and an exile from an island full of other surviving humans.
• Slowly Slipping Into Evil: She used to be in charge of training Seekers for Founders Island, but slowly became obsessed with making hybrids, and ultimately (accidentally) unleashed a plague that wiped out nearly two-thirds of the island's population. We don't learn what became of her after that, but by the time we meet her in "Preboot", she's already a full-blown supervillain.
• Sadist: She enjoys doing her twisted experiments.
• The Sociopath: She is cold, ruthless, robotic, sadistic, and completely apathetic with things like death, destruction or suffering.
• Soft-Spoken Sadist: She sounds very professional and barely raises her voice.
• Transhuman: Describes herself as Human+, a real-world transhumanist term. According to her, the next logical step from glasses and artificial hearts is scissor hands and telescoping spider legs.
• Transhuman Treachery: Her ultimate plan is to build a hybrid army, return to the island, and forcibly convert everyone there into cyborgs.
• Uncertain Doom: Its unknown what happened to her after her ship self-destructed. While Tiffany was ultimately revealed to have survived the explosion at the price of needing more cybernetics, Dr. Gross' fate is left unknown.

Season 10

Warren Ampersand

Voiced by: John DiMaggio, Dave Foley ("The First Investigation" and "Jake the Starchild")

A strange monster that Joshua and Margaret encounter during one of their investigations. Has only appeared in "Joshua and Margaret Investigates" so far until his return in "The First Investigation" and "Jake the Starchild".

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• Abusive Parents: Manages to be even worse than Martin and Hunson combined. Warren has killed hundreds of his own kids, sucking out their life force to prolong his own life.
• Affably Evil: He’s rather friendly and personable... for a guy who only reproduces so that he can drain his offspring’s lives later on.
• Aliens Are Bastards: Threatens a pregnant lady, implants its egg into her husband, and chuckles wickedly at the end of it all before going home... it's the embodiment of this trope, albeit one (somewhat) toned down. And then there's the reveal about what he did to his own children.
• Alien Blood: It bleeds bright green blood after Margaret pricks it with a pin.
• Ascended to a Higher Plane of Existence: Played with. He accepts his impending doom via black hole on the grounds that it will lead to this, but it's not clear if that's what will actually happen.
• Eldritch Abomination: Easily one of the most bizarre beings in the series.
• Even Evil Has Loved Ones: Downplayed to the point of parody. He says of all his children Jake is the only one he feels guilty about betraying to his death, realizing that it's because he feels, what Earthlings call, "low-key affection" for him.
• Expy: Of Ego the Living Planet.
• Face Death with Dignity: When it becomes clear he's going to get sucked into a black hole, he swiftly becomes eager to, noting that he has done as much as he can with a physical body, and is interested by the idea of a greater, more cosmic existence — which he thinks the black hole can provide. Then he lets himself die without resistance.
• Face Full of Alien Wing-Wong: Inflicted this on Joshua, with Jake being the result. That and several other individuals.
• Immortality Immorality: He keeps himself alive by draining the life out of the children he sires and plans to do so forever.
• Killed Off for Real: Jake throws him inside a black hole after he decides to suck the life force of Jake's kids.
• Offing the Offspring: By sucking their life force.
• Out-Gambitted: Once Jake realizes that Warren is tricking him, he swiftly gets the upper hand over the alien with a simple trick.
• Pet the Dog: Admits he actually feels something for Jake, and, post-reveal, uses his stretchy powers to try to entertain and comfort him.
• Superpowerful Genetics: Passed on its powers and some of its physical traits to its son Jake and his children.
• Suspiciously Similar Substitute: Holds a number of striking similarities to Martin, including being a Disappeared Dad, being profoundly selfish but still having a Pet the Dog moment related to his kid, being heavily associated with outer space, being skilled at deception, and eventually choosing to leave behind their prior life to experience a more cosmic existence.
• Vampiric Draining: Drained the life out of his offspring in order to keep himself alive through a special belt.
• Vocal Dissonance: When we finally hear him speak he has a high pitched nerdy sounding voice despite his size and alien appearance.
• Voluntary Shapeshifter: He's so skilled at it that he can shape-shift to create an entire city and seemingly real people on an abandoned planet.
• Walking Spoiler: He's Jake's parent, and wants to drain his life essence like he has done with his other offspring.
• Wounded Gazelle Gambit: Took on the form of a baby when Margaret had it cornered. Margaret (apologetically) punched it out anyway.

Gumbald (SPOILERS)

Voiced by: Fred Melamed, Mark Hamill (as Punchy)

PB's mysterious uncle who reappears in Season 9.

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• Affably Evil: Despite his greedy, dictatorial nature, he's still pretty friendly.
• And I Must Scream: He was in this state while he was Punchy. Though his mind was still his own, his dumb-dumb juice would force him to do and say stupid things, whether he wanted to or not. When PB endures a similar situation due to the Nightmare Juice, she's horrified and tries to apologize to Gumbald when they wake up.
• Artificial Family Member: He isn't really Princess Bubblegum's uncle—she created him when she tried to make a family.
• Big Bad Ensemble: With GOLB in season 9, after The Lich was defeated in "Whispers". Unfortunately for him, he is reduced to Big Bad Wannabe in the Grand Finale.
• Big Bad Wannabe: He is reduced to this in "Come Along With Me". In the penultimate he creates an army composed of the series' various villains. In the final episode he never gets to use it; first he gets trapped in a dream world and then he gets stabbed in the back by Lolly. And this is all before the finale's actual villain shows up...
• Big "NO!": His reaction when he was first turned into Punchy:
  Gumbald: The juice! NOOOOO!!
• Chronic Backstabbing Disorder: He tried to betray Princess Bubblegum in order to usurp the Candy Kingdom while also betraying his other family members and even after "reconciling" with PB he still tries to use his dum-dum juice on her.
• The Dog Was the Mastermind: Gumbald was a relative of PB mentioned way back in the season two episode "Susan Strong". Seven seasons later, it turns out he was both a villain and the original form of Punchy the Punch Bowl, an extra that's been around since the first season.
• Disc-One Final Boss: Ultimately, becomes this in the finale, where he is taken care of halfway through the episode (and in a rather ignominious fashion). Then the real final villain shows up, and things get real.
• Evil Cannot Comprehend Good: When PB figures out he coated Finn in "dumb powder" to try and neutralize her, he shows that he believes rendering her harmless is the same thing as making peace.
• Evil Counterpart: Just as smart as PB, but without any compassion or empathy for others.
• Evil Plan: Take out Finn so Bubblegum will be defenseless, so he can take over her kingdom.
• Evil Uncle: He's Princess Bubblegum's uncle (though not literally), and wants to kill both her and Finn.
• Greed: Obsessed with making money, originally. Now he wants to destroy his "niece" and Finn.
• Hoist by His Own Petard: He was transformed into Punchy the Punch Bowl by his own dum-dum juice. Twice, even.
• Hypocrite Has a Point: Though he does the same thing much more flagrantly, Gumbald is right that PB wanted her "family" to go along with her plans for the Candy Kingdom, despite claims that she wanted them to be equals. Sure enough, all the Candy people PB makes after that point are just as stupid and obedient as Gumbald tried to make Princess Bubblegum. However, Bubblegum made them like that because she genuinely thought they'd be more happier that way... and they are still capable of free will, not mindless slaves. They did eventually lose patience with PB and they elected the King of Ooo in her place.
• Ignored Epiphany: Despite he and Princess Bubblegum seeing things from each other's point of view due to being doused with "nightmare juice" in the finale, he still tries to douse PB with "dum-dum juice" so he can rule the Candy Kingdom. It ends badly for him.
• It's All About Me: All he cares about is himself. He used his dumb juice on his wife and son just so he wouldn't have to share any money.
• Phlebotinum-Induced Stupidity: He creates "dumb juice" to turn his family into obedient idiots. It worked on Chicle and Lolly, but then backfired on him.
• Psychopathic Manchild: Not as blatant as Lemongrab, but in spite of his intelligence, he's extremely short-sighted and selfish.
• Unexplained Recovery: He was Punchy the Punch Bowl for about 800 years before he was somehow transformed back into his old self. It's not until "Seventeen" that it's explained to be a result of the World-Healing Wave unleashed at the end of Elements.
• Walking Spoiler: Oh boy. The biggest — he was actually Punchy the Punch Bowl for the first 8 seasons. He was transformed by some of his own dumb juice.
• Villain Team-Up: Recruits almost every single antagonist of the series (and the Ice King) to fight alongside him and Fern during the war between the Candy Kingdom and Gumbaldia.

GOLB

^{Click here} for GOLB after merging with Betty

A malevolent being who is the embodiment of chaos and all that is evil. Turns out he has had followers or such as some point... most notably the Lich.

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• Abstract Eater: His equivalent to the digestive process breaks down things conceptually, reverting them to earlier states. This reverts Ice King back into Simon and the magic crown back into its original state of granting wishes.
• Almighty Idiot: Ambiguous, but he doesn't move with any sense of purpose until Betty takes over his body.
• Anthropomorphic Personification: Embodies discord and chaos older than the universe.
• The Anti-God: Implied, since he is an extremely powerful cosmic entity visually contrasted with Grob Gob Glob Grod. Perhaps the biggest example of proof is where the Lich calls himself the "Last Scholar of GOLB," meaning the Lich is a follower (if the last one) to GOLB.
• Ambiguous Situation: It's not clear if he used to desire the death of all living things and Betty changed that or if he never wanted it and the Lich was simply mistaken.
• Big Bad: In "Come Along With Me", he becomes the true main antagonist of the entire series and Final Boss.
• Big Bad Ensemble: With Gumbald in season 9, after the Lich was defeated in "Whispers". By the second-half of "Come Along With Me", GOLB ends up as the sole Big Bad.
• Blue-and-Orange Morality: His taint is unquestionably vile and dangerous if concentrated, but if diluted, it may be able to create "good" new life as entities like the Mother Gum and the Candy people are by-products of the Mushroom War that drew on his powers. This goes along with the idea that he is the embodiment of chaos and a necessary evil in the multiverse, just one you wouldn't want to get close to.
• Breath Weapon: He spits out toxic green breath that turns living beings into abominations. It is implied that his creations are the creatures that existed before the universe as the Lich stated in "Gold Stars". It is also implied that the green Catalyst Comet and the bombs from the Mushroom War were made of his breath.
• Chaos Is Evil: The Lich believes that GOLB desires the death of all things. Apparently he was incorrect.
• Complete Immortality: As a fundamental force of the universe, he can't be destroyed or erased, only redirected.
• Contrasting Sequel Antagonist: The Lich is highly intelligent, patient, cultured, and loves to play mind games. This may be because he implicitly was a catalyst comet influenced by GOLB's breath. His goal was the annihilation of all life which places him firmly outside of the natural cosmic balance. GOLB, on the other hand, barely seems sapient, may be incapable of speech, and just appears and attempts to mutate or eat anything near him or which comes to him and is a part of the greater cosmic balance. The Lich is a character altered by a force of nature while GOLB is that force of nature.
• The Corruption: GOLB's breath can twist any living being that comes in contact with it into a mindless, destructive monster. He demonstrates this ability by turning a portion of the Gumbaldian army into a creature that somewhat resembles the Thing, which then proceeds to spread the corruption by attacking a Gumball Guardian. It's implied that a bomb made with GOLB's essence is what caused most of the evil beings in the show to come into existence, including the Oozers and even The Lich himself.
• Disc-One Final Boss: He was the final threat everyone faced in the show, but his role was demoted to this trope after The Lich becomes the real final boss of the franchise in Distant Lands.
• The Dreaded: Everyone fears him, including the entire Rogues Gallery of the series, and for a very good reason. Even the Lich, who's devoted to bringing about what he thinks GOLB desires, and has undercurrent of fearful reverence when he finally meets his god face to face, though his frustration and anger over the perceived meaninglessness of his existence ultimately wins out.
• Early-Bird Cameo: While he doesn't play a role in the show until the final season, GOLB makes a cameo in Season 5's Puhoy, where Finn briefly runs into him after his elderly self dies in Pillow World.
• Eldritch Abomination: He's an ancient cosmic entity, after all.
• Evil Is Not a Toy: Young Simon researched GOLB and dreamed of harnessing his power. Apparently he wasn't the only one as some pre-War human nations somehow got some of his breath and used it to upgrade their nuclear missiles. The result was the Great Mushroom War. The tetris blocks surrounding GOLB are apparently entities who tried to use him for their own ends or misinterpeted his wishes.
• Feral Villain: He seems to lack sapience or any ability to speak. He's more of a force of nature than a character.
• Forced Transformation: In Fiona and Cake the Lich discovers the hard way that GOLB's floating tetris blocks are revealed to be the remnants of followers that have displeased him.
• Fusion Dance: He uses his breath to fuse the Gumbaldian army into a single grotesque monster.
• Generic Doomsday Villain: GOLB never displays any sort of motivation or even basic sentience, acting as more of a force of nature than an actual character. He spreads chaos because he's... there.
• God of Chaos: A malevolent entity of pure chaos and discord that spreads destruction wherever he goes.
• Greater-Scope Villain: Of the whole series. He created The Lich and the other monsters before time, and was the one who sent The Lich into the universe, who caused the Mushroom War and desired the extinction of all that is life.
• I Shall Return:
  • Grob Gob Glob Grod believes he will attack Mars again, which Magic Man agrees with... at first.
  • It finally happens in the finale after Betty and Normal Man summon him in order to save Simon and Margles.
• Knight of Cerebus: And how. His appearance in "Come Along With Me" marks a dark shift in tone that's on par with episodes with The Lich.
• Monster Progenitor: The Lich? Just some of GOLB's spit and breath loosed on some poor schmuck.
• Mother of a Thousand Young: The monsters from before the universe are implied to be his many children, created from his breath that mutates creatures into horrible chimerical abominations, with the Lich being the last one.
• Omnicidal Maniac: It seems he's is more than willing to finish the work that his last scholar did not finish: the destruction of all life. Except his cubes are the punshiment for his followers who've actually achieved that. Death and destruction are fine but total extinction? Big nono. Which makes sense as he's the incarnation of chaos, not death or extinction.
• Overly-Long Tongue: It's always hanging out of his mouth.
• Ret-Gone: Presumably what he did to Margles, since not even Prismo could bring her back! When he tried to, all he conjured up was a wastebasket, and he says that something like that has never happened before. It's possible the same thing happened to Finn's life in 'Puhoy' and to Betty.
• Satanic Archetype: GOLB is the closest thing the series has to Satan himself (yes, even more than Hunson): He is The Anti-God, the Greater-Scope Villain to The Lich, a Monster Progenitor, and he is so monstrously powerful that confronting him is practically an impossibility. Furthermore, his appearance heralds the coming of an apocalypse. That said, however, as pointed out in the wiki he seems to have more in common with the Zoroastrian Ahriman, since he is a primordial, mindless force of evil rather than a Fallen Angel, and the heroes retrieve their loved ones from his bowels (albeit in a more dignified manner than sodomy).
• Sharing a Body: What happened to him after he and Betty fused into GOLBetty, with Betty stopping him from regaining control of his body.
• Wrong Assumption: The Lich thinks that killing all life will please his indirect creator, GOLB. He was fatally mistaken. Given that killing all life would bring perfect eternal order and an end to Chaos...
• Vile Villain, Saccharine Show: Much like The Lich, GOLB truly stands out as a disturbingly horrific villain without comedic moments. He is an Eldritch Abomination that can't be harmed or deterred directly in any meaningful way and his threat and presence are played seriously. Even in Fionna and Cake where it's at its most relatively benevolent thanks to Betty's influence, it still proves to be a terrifying force whenever referenced or encountered.
• The Voiceless: He never says a single word in the finale, not even when Betty merges with him. When they reappear in Fionna and Cake, GOLBetty still doesn't speak, to the point of (likely) projecting into Simon's mind in order to talk to him normally as Betty.
• Weaksauce Weakness: Harmony. Singing causes his monsters to squirm in pain and produces deformities in GOLB's body. Downplayed in that it only incapacitates him momentarily, it takes Betty's Heroic Sacrifice and an Artifact of Doom to truly end GOLB's menace.

Distant Lands

Hugo

Voiced by: Randall Park

The Drift's lead scientist, a space elf trying to keep The Drift from falling apart.

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• Big Bad: Of "BMO", being the one responsible for the Drift falling apart.
• Bitch in Sheep's Clothing: While he plays the part of a benevolent scientist, he's actually nothing more than a corrupt executive that aims to steal The Drift's resources for himself and a select number of wealthy supporters.
• Broken Pedestal: Needless to say, Y5 loses all respect for Hugo after she uncovers his Evil Plan.
• The Elites Jump Ship: His plan several times over has been to evacuate himself and his closest associates, plunder the place for whatever is useful to him, and repeat.
• Evil Counterpart: Hugo is a brilliant scientist like Moe, but he is far more amoral than BMO's kind creator. Further driving the comparison home, he also created the GO bots, his own knockoff version of Moe's MO bots.
• Human All Along: He and the other "elves" are Transhuman Aliens that evacuated the Earth and biologically augmented themselves using technology from benevolent aliens.
• The Sociopath: While capable of faking manners, Hugo is the type of person who would destroy everyone and everything around him if he saw profit in it, eliminating anyone he saw as a threat and leaving the Drift (and everyone in it) to die just so he and his "loyal" associates could leave for other opportunities. CMO describes him as "a great guy as long as you are good for something."
• Victory Is Boring: He managed to escape The Drift with resources to last him a good while, but the end of the episode implies he's unhappy by the fact that he's basically alone in space.
• Villain with Good Publicity: He's a beloved scientist celebrated all across The Drift. They of course have no idea that he's behind most of its problems.

Mr. M

Voiced by: Stephen Root

Hugo's mysterious assistant.

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• Call-Back: A few things he says are word for word exactly what something Martin had said earlier in the show, "Here comes the rascal" being one of the most obvious hint as to his identity.
• The Dragon: To Hugo.
• The Faceless: Wears a full-body suit for all of "BMO", though we briefly see his feet, which suggest he's human.,
• Significant Double Casting: One of the bigger hints that he's Martin is sharing voice actors, though the voice filter he speaks with makes it not immediately obvious.
• Two Aliases, One Character: It's heavily implied, but not stated outright, that he's Finn's father Martin.
• The Unreveal: Despite numerous hints that Mr. M is Martin, "BMO" never explicitly shows his identity.
• Villain: Exit, Stage Left: He bails as soon as Hugo takes off with The Drift's resources.

Molto Larvo

Voiced by: Dee Bradley Baker

A fiery dragon who has terrified the glass kingdom for centuries.

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• Big Bad: He's the main antagonist of "Obsidian".
• Evil Is Burning Hot: True to his name he's a molten mass of glass. When he slams a glass person with an arm, instead of shattering or crushing them the heat immediately flattens them into a puddle.
• Heel–Face Turn: Hearing Marceline's new song, Monster, allowed him to let go of the rage he was hanging onto and come to terms with his trauma; transforming him into a peaceful butterfly-like creature.
• Leaking Can of Evil: He was sealed away in a cavern near the glass kingdom, but the citizens occasionally entered to use his heat to heal their cracks. Once the seal begins weakening it sends out minions to try and take out Marceline before she can help seal it back up.
• Meaningful Name: An obvious play on Molten Lava.
• Mook Maker: Can spit out molten globs of black glass that turn into minions that follow his mental commands.
• Silicon-Based Life: Molto is made of glass.
• Tragic Monster: Larvo was once a small sea creature that witnessed his siblings get devoured by a sea monster and was left scarred and trapped within what would become the Glass Kingdom's furnace. This event would leave him traumatized and consumed with rage to the point of lashing out at anything in his way.

New Death

Voiced by: Chris Fleming

The son of Life and Death who has taken over as ruler of the Dead Worlds and the new Death himself.

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• Alas, Poor Villain: Surprisingly, considering what an obnoxious jerk he is. In the final moments before his death, he realizes that the weapon used to kill him was given to them by his own mother, he lets out a confused and quiet "Mom?" as he covers his face, making him pitiable right before his end.
• All Deaths Final: He tries to end the cycle of reincarnation, which would result in this. This ultimately costs him his life, as it turned his mother Life against him and made her create a weapon to Kill and Replace him.
• Bad Boss: He treats his minions like dirt; regularly insulting them and even killing one on a whim.
• Berserk Button: Anything that reminds him of his past before becoming the new Death is this. When he enters the 50th Dead World and watches the state of peace of its inhabitants, it angers him so much that he destroys it with his scythe.
  New Death: What. A. RIPOFF!! I HARDCORE SCHEMED MY WAY INTO A HIPPIE CHOIR?!
  Jake: 50 isn't just a place, it's a state of mind.
  New Death: That's the dumbest... that's the dumbest thing I've ever heard.
  • His other button is to try to say anything that may sound like a command to him, as he hates being ordered to do things. The Lich found a way around it by simply nudging him in the right direction.
    New Death: DON'T TELL ME WHAT TO DOOOO!!!
• Big Bad: Of "Together Again", with him seeking to destroy the Dead Worlds. Except, not really. He's actually a pawn of the Lich.
• The Corruptible: The Lich manipulated him by pretending to be his friend and encouraging his rage, eventually managing to convince him to kill Death. After he became the new Death, the Lich promptly possessed him.
• Dark Is Evil: His scales are a dark shade of teal.
• Defeat Equals Explosion: He explodes into a flurry of green ghosts and tumbleweeds when he dies.
• Dimension Lord: He's in charge of the Dead Worlds, in a very literal sense. Once Finn and Jake provoke him, he very quickly destroys the 50th Dead World, sending everyone down to the 1st Dead World. He later starts destroying the other Dead Worlds so that all souls go to the 1st and tries to end reincarnations altogether.
• Emo Teen: Very angsty and full of rage, though his age is pretty vague, which led to him resenting his father's attempt to bond with him through sand gardening because he could not understand how to be zen. May have stemmed from some issues over being a new incarnation born from Life and Death without any indication of his place in the natural order. His father was also not shown to speak to him, and his mother was implied to have little involvement with his life.
• Extra Eyes: He has four eyes.
• Freudian Excuse: His father had difficulty understanding him and his mother didn't even bother to try, leading him starved for guidance and ripe for exploitation by outside forces.
• Hair-Trigger Temper: Almost anything can set him off his fuse is so dangerously short. Hard to say whether or not this is from the Lich's influence or he was always like this.
• The Heavy: Once the Lich is exposed as the one behind him, he confirms New Death was little more than a pawn in his plan to destroy all life.
  Jake: You've been puppeting New Death this whole time!
  The Lich: The spawn of Life and Death is a creature without purpose, fit only to be a pawn in my eternal quest to end all life.
  Finn: Just let it go, man!
  The Lich: With this vessel, my victory is inevitable.
• Heel Realization: He has one in his final moments, when he realizes his mother had a hand in his demise. Right before he explodes, he covers his face with his hands, as if on the verge of crying.
• Killed Off for Real: He ultimately dies, just like his father. He meets his end at the hands of Mr. Fox and the Kiss of Life. He realizes his mother had a hand in this right before he dissipates.
• Kill and Replace: Killing Death was what lead to New Death becoming the new ruler of the Dead Worlds. He falls victim to this himself, when Mr. Fox kills him with the Kiss of Life and becomes the new Death.
• Like Father, Unlike Son: His father was a zen sand gardener, his mother was an all-loving shaper of new lives. New Death had a rage-filled hatred of everything though it's actually the Lich's possession that made him take it to extremes.
• My God, What Have I Done?: When it’s revealed exactly how he "inherited" the title of Death, we see he briefly has this reaction when he realizes that he just killed his father.
  New Death: …What did I do? Mom’s gonna kill me!
• Only One Afterlife: After he grows disgusted with the 50th Dead World, he destroys it and all others except for the 1st and tries to, in Mr. Fox's words, "make everything horrible forever."
• Patricide: He murders his father, Death, while under the Lich's influence.
• Psychopathic Manchild: An amoral psychotic sort who never matured
• Red Eyes, Take Warning: Before becoming the new Death, his pupils were red.
• Red Right Hand: Hidden under his glove his actual right hand is the Farmworld Lich.
• Skull for a Head: Had a normal snake head until he became New Death, which stripped the flesh off.
• Snakes Are Sinister: New Death has the head of a snake and is an absolute jerk who's out to destroy the Dead Worlds. Though he's only evil because of the Lich possessing him.
• Trademark Favorite Food: He's seen drinking (and littering cans of) some sort of canned boba tea that resembles an energy drink.
• Tragic Villain: He's the literal child of Life and Death, who's initially shown struggling both with his heritage and with parents who have to neglect him on some level in order to keep things in balance. Death at least tries to console him, but was so subtle about doing it that it ultimately led to New Death lashing out and killing him, and ultimately still shows he loves his son even as hes about to die at his hand. Life, in contrast, doesn't seem to care at all that he's been in anguish, and also isn't concerned about him killing her husband so long as she still gets to make her own creations. She, tellingly, is more outraged by New Death stopping the cycle as a result of this, and has a hand in killing him without a second thought. It makes his ultimate defeat feel as hollow as it is necessary due to the Lich's manipulations, and his death much more heartbreaking.
• Unwitting Pawn: To the Lich, who manipulated him into becoming the next Death so that he can possess him and use his power to destroy the Dead Worlds and end the cycle of reincarnation.
• Volcanic Veins: His body is covered with green cracks shortly before he explodes.
• Wax On, Wax Off: It's implied that zen sand gardening rake work contributed to his skills with his father's scythe.

Dr. Caledonius

Voiced by: Toks Olagundoye

A teacher of Ancient Wizard History and one of the nicer teachers around.

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• Big Bad: She's the true antagonist of the episode, running a cult of dark wizards that seek to resurrect Coconteppi and bring forth the "Second Age of Terror".
• Bitch in Sheep's Clothing: She acts much nicer and friendlier than the other teachers, but she's secretly a ruthless dark wizard who idolizes Peppermint Butler and seeks to revive Coconteppi.
• Cyborg: She's seen to have mechanical legs and at one point her whole body turns around with mechanical noises, with her head staying at the exact same place. Word of God confirmed that she's based on japanese clay dolls and Dogu figurines, hence her mechanical nature.
• Evil Mentor: She gives Pepper heartfelt encouragement and looks out for his well-being, but that's because she knows he's the reincarnation of Peppermint Butler and wants him to be the host of Coconteppi.
• Hoist by Her Own Petard: She uses Coconteppi's heart, still dripping with deadly ichor, as a weapon against Pepper Mint. She then dies when a bit of splashing ichor gets into her mouth, causing her to explode.
• Ms. Exposition: Due to being a history teacher, she exposes a lot of information for the heroes and the audience, such as the history of Wizard City and Dark Wizards. She also explains what happened to Bufo and Spader.
• "Pop!" Goes the Human: She accidentally drinks a splash of Coconteppi's ichor, which causes anyone unable to withstand its power to blow up.
• Tattooed Crook: She's a practitioner of illegal Black Magic, and has the snarling visage of Peppermint Butler (the most infamous dark wizard in Wizard City's history) tattooed across her back.
• Walking Spoiler: Take a wild guess.

Fionna and Cake

Scarab (SPOILERS)

Voiced by: Kayleigh Mckee

A god-auditor with a grudge against Prismo who works to keep entities in check so they do their jobs as they are supposed to. Prismo's unauthorized actions put him in pursuit of Fionna, Cake and Simon as he attempts to discredit Prismo by revealing the existence of Fionna and Cake's reality.

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• All Crimes Are Equal: Pretty much everyone he audits falls under the same fate — imprisonment within a crystalline egg — no matter what they're guilty of.
• Ambiguously Evil: Downplayed; his actions initially place him firmly in Punch-Clock Villain territory.
• Arch-Enemy: He hates Prismo with a passion and his entire goal is to steal his job; destroying Fionna and Cake's universe is simply a byproduct of that. Even when he goes off the deep end and tries to destroy their universe after it's canonized he does so to spite Prismo by destroying his "precious sand castle".
• An Arm and a Leg: Loses his right arm after falling through a portal to GOLB's dimension created by Simon but easily reattaches it.
• Badass in a Nice Suit: His ensemble consists of rocking a tuxedo-like attire complete with a tie and he is no slouch in a fight, capable of taking on both mortals and wayward entities alike.
• Be Careful What You Wish For: Ironic name aside Scarab is motivated out of a desire for Prismo's job as Wishmaster. At the end of the series he's demoted to Prismo's assistant; while clearly annoyed he seems to warm up to Prismo when he shows his worldbuilding program with Prismo teasing he just might take over as Wishmaster in a few centuries.
• Big Bad: Of Fionna and Cake, hunting down the titular duo as denizens of a universe not meant to exist as well as Simon for being the unwitting host of said universe.
• Big Creepy-Crawlies: While already able to assume such a form on his own, attempting to kill Simon in front of his fiance Betty (who merged with an Eldritch Abomination) results in him being turned into a group of wildly cackling and mostly chittering bugs with a Hive Mind that could recreate him entirely by coming together — which they eventually do.
• Bounty Hunter: One of his duties; he makes his debut hunting down a cosmic criminal who abandoned his post after already having captured many other entities.
• The Comically Serious: Compared to many other characters he's definitely among the less humorous.
• Deadpan Snarker: He particularly shows shades of it in his interactions with Prismo.
• Defiant to the End: Before getting sent back to his bosses and becoming Prismo's assistant he stood up to tell Fionna and Cake they'd inherited everything bad about existing only for the latter to acknowledge it as them being real; he also tried imprisoning them before having his Power Crystal knocked away.
• Did You Just Flip Off Cthulhu?: Explicitly tells GOLB(etty) not to interfere despite their attachment to Simon; it predictably doesn't end well for him.
• Disproportionate Retribution: He tried getting Prismo in trouble and wiping out his homemade universe at all costs, stuck him in a cube and smashed one of his pickle jars simply for being Wishmaster. It later turns out he also imprisoned fellow entities over trivial matters and for minor infractions.
• The Dreaded: Prismo for all his Reality Warping powers is scared of him due to being higher on the cosmic hierarchy; and with enough evidence presented to their superiors Scarab is able to remove him from his post. He's also feared and loathed due to his occupation and overall demeanor.
• Embarrassing Nickname: He apparently used to go by the nickname "Scrabby". He insists nobody calls him that anymore when Prismo refers to him by it in the present day although Orbo still does.
• Embodiment of Vice: Envy. While he presents himself as a Consummate Professional he wants nothing more than to take Prismo's place as Wishmaster and is willing to end many lives, destroy entire realities and take plenty of shortcuts to get it.
• Establishing Character Moment: He finds and captures the entity Kheirosiphon for voluntarily leaving his post to become a tea shop owner and is quietly pleased when he notices Prismo on his cosmic hit list for committing a violation.
• Even More Omnipotent: Played Straight and inverted. His job description is that of a "god-auditor", meaning he tracks down and scrutinizes other cosmic beings should they start breaking the laws governing them. That said it's clear he's in more of a middle management position in the Celestial Bureaucracy. He even has to put his mission to incriminate Prismo (whose job he covets) on hold when Orbo calls him away.
• Evil Is Petty: For a given definition. He desired Prismo's status as Wishmaster for himself, going above and beyond to prove him unworthy of it and belittling him all the while.
• Eyes Always Shut: He can open his eyes but prefers not to appear as if he has them open.
• Fangs Are Evil: Only shows them whenever he displays his hidden face.
• Feeling Oppressed by Their Existence: Or "feels as if he should've been the one to get Prismo's position in the first place".
• Felony Misdemeanor: Some of the crimes he imprisoned others over included playing games on a work computer and stealing office supplies.
• The Friend Nobody Likes: Among the Celestial Bureaucracy he's both feared and ignored; part of it is due to his position but a larger part seems to involve his humorless personality.
  Scarab: I was never invited to parties.
• Flower Mouth: He can open the jointed plates on his face to reveal bare flesh with fangs and lidless eyes underneath.
• Furry Reminder: Prismo tries to bargain for Scarab's mercy by offering to conjure up a dung ball (dung beetles being a subgroup of scarabs).
• Green-Eyed Monster: He ranks higher than Prismo but still wants his position as Wishmaster. It's very clear he's specifically trying to incriminate Prismo and supplant him as Wishmaster rather than actually caring about Fionnaworld being unauthorized; he's envious of who and what Prismo is to no end.
• Hazy-Feel Turn: He never expresses regret for his actions and is bitter about his punishment — being transformed into a harmless Living Shadow to work as Prismo's assistant. That said Prismo's already forgiven him and Scarab seems to have dropped the hatchet — though Prismo implying he could become Wishmaster if he behaves might help.
• Hellish Pupils: Has them under his retracting face-plates which he can normally reveal when stressed or for intimidation.
• Hypocrite: He tears into Prismo for neglecting his duties and job alerts. Naturally, as he becomes obsessed with pursuing Fionna and Cake he starts ignoring his own as well.
• Impossible Hourglass Figure: He has a very slim waist while his hips and shoulders are bizarrely wide and angular.
• Insectoid Aliens: Resembles one in appearance complete with jointed, segmented armor.
• Jerkass Has a Point:
  • He's right about Prismo breaking the rules through creating Fionna and Cake's home universe without anyone's knowledge and the effects the duo's travels ultimately had on The Multiverse from the moment they ended up in Ooo via Simon's attempt to resurrect Betty. Unfortunately for him it falls flat due to only wanting Prismo's God Job and when he tries taking said universe apart anyway.
  • Scarab pointing out to Orbo that no one seemed to do anything regarding Prismo's behavior just because all the other entities saw him as a "cool dude" actually holds some weight when Prismo let himself go following the death of Jake, started ignoring warnings and sabotaged Wyatt's wish. While it falls on deaf ears for Orbo one of the other entities claps at Scarab's explanation and every entity's boss actually speaks to Scarab.
• Kicked Upstairs: Inverted. As a god auditor he is further on the hierarchy than Prismo, a Wishmaster. That said he wants to be a Wishmaster himself and has been trying to get Prismo fired to take the position. He instead gets to be Prismo's assistant after his own crimes are revealed but Prismo alludes he might get to be a proper Wishmaster in at least a century.
• Laser-Guided Karma: Is imprisoned in a crystalline orb with his own Swiss-Army Weapon after doing the same to many others and later made Prismo's assistant.
• Made of Iron: Survived Winter King freezing him in solid ice, a direct shot from Farmworld Finn's Arm Cannon, being attacked by a physical embodiment of both Primordial Chaos and Absurdity Ascendant, having an advanced tank dropped on him and getting pummeled by Fionna and Cake after the former grew in size and the latter turned herself into a hammer to say the least; though that last one left his armor cracking in various places.
• Master of Disguise: One of his abilities is disguising himself to take targets by surprise.
• Multi-Armed and Dangerous: He grows an extra pair of arms after deciding to continue his mission regardless of the orders he received.
• Mythical Motifs: His scarab theme is likely an allusion to the Egyptian god Khepri, a scarab deity who maintains cosmic order by pushing the sun across the sky. Similarly, Scarab maintains order by chasing down cosmic criminals.
• Necessarily Evil: Used to be when it came to delivering "justice" against higher beings who disrupted the Celestial Bureaucracy (more so than usual anyway).
• Nigh-Invulnerability: No matter how much punishment he takes he just won't stay down. Not even being attacked by GOLBetty permanently harmed him since despite her splitting him into smaller bugs he later managed to recombine as good as new. During his final fight against Fionna and Cake they manage to break his carapace; however he still got back up and tried to keep going until they trapped him inside one of his own eggs.
• Nightmare Face: Under his facial carapace is a horrible mess of teeth, mandibles, spikes, tentacles and bulging eyeballs.
• Not So Above It All: He occasionally lets out squeals of surprise when encountering something that genuinely frightens him such as Orbo being serious. After spending the whole series ranting about how abominable illegal realities are he takes to the idea of creating his own fanfiction universe when Prismo offers to show him how, quickly suggesting it should be a "dark medieval mystery drama".
• Not-So-Well-Intentioned Extremist: His vendetta against Prismo largely seems to be wanting the job of Wishmaster instead and he's intentionally ignoring more pressing cases on his schedule; Scarab practically has to needle Orbo to keep hunting for evidence because he doesn't even care. When Fionna and Cake's universe becomes canonized and his real boss contacts him directly to call off the hunt Scarab suffers a Villainous Breakdown with the intent of destroying their world bit by bit out of spite.
• Power Crystal: The crystal-shaped Magitek tool he carries around with him serves many purposes, including that of a Swiss-Army Weapon.
• Punch-Clock Villain: He's not acting out of malice, simply doing his job keeping cosmic beings in line so they do what they are supposed to. And if it entails erasing unauthorized universes that are not supposed to exist and everyone in them so be it. This begins to get mitigated as Scarab becomes more focused on catching Fionna and Cake even to the point of starting to neglect his own job alerts so he can keep focused on the search, the very thing he chided Prismo for; not to mention how he has his own goals that are entirely self-centered. By the time Fionna canonizes her universe this is completely forgotten as he continues just to make Prismo upset despite being told to drop it.
• Reassigned to Antarctica: As punishment for his blatant and repeated insubordination Scarab is reassigned as Prismo's assistant and custodian for an undefined but extraordinarily long time of at least several centuries, possibly forever. It's not bad though since Prismo is a Benevolent Boss who appreciates the company.
• Red Eyes, Take Warning: Has bright red dots in his eye sockets when not using his Flower Mouth.
• Scarab Power: The aptly named Scarab is a formidably powerful Insectoid Alien in charge of keeping various beings in line via Magitek.
• Screw the Rules, They Broke Them First!: Pulls this big time despite being warned and eventually goes off on his own.
• Spell My Name with a "The": Sometimes referred to as "the" Scarab though never from himself.
• The Starscream: Despite being higher-ranked than him Scarab expresses the desire to usurp Prismo as Wishmaster with Fionna and Cake's unauthorized universe in Simon's mind giving him the perfect opportunity to do so.
• Space Police: Of a more cosmic sort. He specifically monitors and checks on those of higher existences to see if they're doing their jobs.
• Swiss-Army Weapon: As mentioned above he can trap opponents with it; that's not all as it can be used to store and release said foes, provide an advantage in combat, alter the existence of reality at will, contact his employers and even contains a list of targets for him to seek out.
• This Cannot Be!: When Fionna makes her "unregistered" and Depowered universe completely legitimate which renders his mission obsolete.
• Tough Beetles: This aspect is particularly emphasized upon being split apart by GOLBetty before Ellis P. allows him to reform.
• Villainous Breakdown: After Fionna manages to canonize her universe and strips away its unauthorized status he goes ballistic and chooses to destroy everything the old-fashioned way which he himself compares to knocking down a sand castle.

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