Worst Adventure Time Characters

Adventure Time is awesome, but some characters are not.
The Top Ten
1 Princess Bubblegum Princess Bonnibel Bubblegum of the Candy Kingdom is a fictional character in the Adventure Time animated series on the Cartoon Network.

Princess Bubblegum is a wrong character for thousands of reasons
1. Princess Bubblegum is the leader of the candy kingdom. Seriously
2. Princess Bubblegum wants to get to second base with Finn. What
3. She actually wears a crown with a crystal
4. Also her voice is by Hyden Walsh, the same actress who voices Princess Starfire from Teen Titans and the GO! Instalment and Summer from Henry hugglemonster (I used to LOVE watching that on Disney junior) So you would expect her voice to leave you absolutely speechless. What you get is a pointless person who doesn't even sound right and sounds whiny, listen closely to Hynden's voice on headphones, it sounds irritating
I was tempted to vote for Finn but then I realised, seriously? BMO? Are you serious? Princess Bubblegum is like Pearl but with more stupidity out of Hynden's voice. Great work.

Princess Bubblegum is not a bad person. Ruling an entire kingdom for almost a millennia is enough to drive anyone crazy. PB has flaws, and yes, she can make mistakes, but she is not evil. She does what she thinks is best for her citizens, and believe me, handling her type of people is a BIG responsibility. What, she leaves for a few minutes and the entire castle is practically ripped apart. You can't really blame her for what she's been doing if her subjects can't even handle themselves for ten minutes.

2 Tree Trunks

Tree Trunks is one the weirdest and dumbest characters in Adventure Time. The creators did a very lazy, boring, and bizarre job writing her character. She practically does nothing impactful in all her appearances as she spends the entire series making a lot of dumb, weird, and bad decisions in life. Her origin story is pointless as it goes nowhere and it does nothing to make her any more interesting. She's basically an unnecessary filler character with no contribution in the series whatsoever. All the episodes that focus mainly on her have storytelling as weak as her overall character. Plus, the worst thing she did in the series was having an affair (She's promiscuous).

I liked her in the first season, but then she started spouting things that seem immoral and against what the writers set up for her character in season 1. Like she is 100% okay with forcing people to watch her PDA, but moving in with someone before marriage is "wrong". And then at her wedding she insults Princess Bubblegum by calling the dude she wants to marry her "the one true King of Ooo". Seriously uncool.

3 Flame Princess Flame Princess Is a Princess made out of fire and lives in her kingdom ruled by here evil father, The Flame King. Her first appearance in the show was “Incendium” (Season 3, Episode 26) She was Finn's girlfriend at one point in the series.

I hate Flame Princess because she's a short-tempered, whiny, immature, idiotic, gullible, stubborn, paranoid, petty, hypocritical, and unsympathetic Mary-Sue. Despite her difficult past, her current behavior doesn't really feel like it stems from that and it feels more like she's just exaggerating her pain and playing the victim. Her character arc is very dumb, thin, and mean-spirited as she solves her problems very easily using her negative traits (She basically has reverse character development). Furthermore, all her motivations are underdeveloped, making it even harder to even care about her. I hated how in the episode "Frost & Fire", when Finn apologizes and explains the truth, she wanders off, doesn't ever try thinking that Finn would never hurt her feelings, and only forgives him when it's too late. Furthermore, it wasn't just Finn actions that caused them to break up, it was also because of Flame Princess being incredibly stupid. Plus, her relationship with Cinnamon Bun is very annoying, forced, shallow, and dumb because she immediately trusts him more than anyone despite the fact that she barely even had a conversation with him when they first meet. Flame Princess is just poorly-written and so much more irritating than her dad. Even Flame King had better character development than her which is pretty ironic considering that the creators want use to care about her instead.

4 Lemon Grab

I was just waiting for adventure time to kill this character off. He was such a horrible leader, yet every time he screwed up, he was just given another chance by PB. If he were my creation, I would've killed him on the spot.

He is one of the worst characters I have ever encountered. He makes me cringe, there is nothing redeemable about him and he constantly brings negativity to the story.

He doesn't even try to be likable, even when he needs it most. Only his scream that's turned into a meme is funny, but after this, he simply becomes UNACCEPTABLE *ahem*.

5 Finn Finn 'the Human' Mertens is a fictional character and the main protagonist of the American animated television series Adventure Time created by Pendleton Ward.

This guy is basically a pathetic American cartoon equivalent of Kirito. Kirito is drawn with great detail, has a girlfriend and a harem, tries not to do anything stupid, and remains badass throughout the series, whether he is a solo player in SAO or trying to save his girlfriend in ALO, but somehow his series is polarizing and gets called a Mary Sue (which actually makes him all the more flawless than poorly drawn Finny). Finn's drawn body sucks, can't even get a girlfriend even if he tried, has become retarded even at the beginning of the series, and is too flawed due to being a complete dummy. I hope Adventure Time gets cancelled, because at least anime characters are not as retarded like this bull of a cartoon character.

Finn used to be this fun, happy-go-lucky adventurer who was always willing to help others in need. But between then and now, his cherifulness and go-getter adittude slowly vanished, along for the rest of his personality. When I last watched the show, he was just a husk. A vessal for the story. He was just, there. I'm not sure how he is currently, but I hope he had become better than he was...hopefully...

6 Marceline Marceline the Vampire Queen is a fictional character in the American animated Cartoon Network television series Adventure Time, created by Pendleton Ward.

She is a vampire, hence her name Marceline the Vampire. I know there's lots of you, vampire fans, but she, in my opinion is the worst character of the series because she is a vampire like I said earlier. Vampires are said to be pure evil blood-sucking immortal creatures of the night.

NO.
Marceline is the most tragic, developed character in Adventure Time. Whoever put ANY of these characters in the top five (bar Lemongrab) clearly hasn't seen thr development of ANY of these characters.
It's fine if you don't like Marceline; I respect that. I just don't agree with you.

She's extremely overrated, all she does is sing and be emo and all these fetuses keep trying to "relate" to her.

7 BMO

BMO is stupid. Like, really stupid. Also, he is so mean to NEPTR and basically acts like a spoiled child. Honestly, I don't see how anyone could put up with him. Let alone live with him.

To me, BMO is annoying. He's a selfish, immature, foolish, whiny, arrogant, and insensitive robot who barely has any character development as he often doesn't learn from his mistakes and he often views other characters as though they're beneath him. In the episode "BMO Lost", he finds a lost baby and says that he will take it back home, but when the baby's mother finds him (and BMO is fully aware that that's his mom), he tries to steal him from her. When the mother gets her baby back, BMO isn't the slightest bit happy the baby is back with its mom; he's just sad the baby's with someone else. In the episode "Shh!", when BMO notices Finn and Jake being completely silent, he immediately jumps to the conclusion that they are imposters and spends most of the episode being a jerk to them. In the end, when he finds out that they really are Finn and Jake (just through Finn and Jake talking), he doesn't even apologize or let Finn clear up the misunderstanding. In the episode "Football", he causes destruction to his own house, brutally injures NEPTR (a character BMO likes to belittle), and almost kills himself because he keeps taking his imagination too seriously. In the episode "Ghost Fly", he steals all the credit in Jake's resurrection even though it was Dr. Princess who saved his life. In "Islands Part 2", he purposely uses a bad attitude to offend Whipple the Happy Dragon, leading to BMO causing more problems for his friends and himself. In "Islands: Part 4", he spends the entire episode prioritizing a game over Finn and Jake and even denies a moral about what happens when someone gets addicted to something. Plus, his sort of redemption at the end felt very forced and half-baked. In "Elements: Part 1", he doesn't show the slightest bit of concern for any of his friends who need help and allows himself to be possessed by a corrupted Princess Bubblegum. My sister also dislikes BMO; she says that he's dumb. She doesn't like the episode "BMO Noire" because most of the... more

8 Cinnamon Bun

Cinnamon Bun's character arc in the series was one of the most annoying and horribly-written parts in Adventure Time as it is incredibly forced and cynical; his transition from a butt-monkey to a different character is so sudden and abrupt that it makes the character feel so superficial and unrealistic. In fact, his character development felt more like flanderization; he went from being an odd but tolerable comic relief to a Gary-Stu boyfriend for Flame Princess who acts like a jerk to Finn and serves as a mere plot device to help motivate Flame Princess in succeeding and finding happiness using her bad traits. It was a pretty bad choice of the creators to force him to become Flame Princess' new perfect boyfriend and their relationship sucks because it's incredibly shallow and mean-spirited it is. Furthermore, it's there to rub it on Finn's face, which is pretty annoying and cruel to say at least (Yes, Finn's actions were partially the reasons why he and FP broke up but he didn't deserve this).

Cinnamon bun used to be one of my favorite characters for his strange yet funny personality but now he's some smart arse who is kind of a jerk to finn and now he dates flame princess. what! Worst episode right after the gross treetrucks/pig romance episode. Ughh.

9 Me-Mow

Let's All Remember the fact that this character was created by a lil Kid, So basically your hating a lil kids OC, the kid was like 6 or something, just imagine if he sees this

10 Ricardio

This guy is DISGUSTING. Look, I wouldn't judge a character because of how they were born as or how they look (I can't blame him for being made an organ), but the fact that he likes to be romantic to Princess Bubblegum in a way where he poisons Finn and Jake is just sick. Only twisted people like serial killers do such things.

Grossest thing ever. OMG I got nightmares from his face. I'm so glad they didn't put his picture here.

Worst antagonist in Adventure Time.

The Contenders
11 Marshall Lee Marshall Lee is the gender-swapped version of Marceline, created by the original series designer, Natasha Allegri, who is featured in "Fionna and Cake".

Marshall Lee is the best!
How could anyone put him on this list?

I am surprised. He almost has as much fans as One Direction.

Why did they do this to Marceline? This guy is just BAD.

12 Ice King The Ice King is a character in the American animated television series Adventure Time. A supposedly evil wizard capable of creating and manipulating ice and snow, he is the self-proclaimed king of the Ice Kingdom, a land of ice he claimed as his own and lives in in company of many penguins.

People just hate him "because he's the main antagonist" and so on so forth. The Ice King is really funny and he needs to have more episodes focused on him. Ice King is kind of stupid, but him as Simon... That's a sad story. I just hate how he's so abusive towards his penguins and all.

Ice King just acts greedy because he's gone insane because of the crown he wears. In the past, he was quite solid hearted and took care of Marceline when she was sick and lonely during the mushroom war

Wasn't the worst character in my opinion until he made Finn broke the Demon blood sword. Now I want to see him dead every time he appears on the show.

13 Princess Cookie

Princess Cookie takes Princess Bubblegum too seriously! When PB hears that Princess Cookie wants to be a princess even though he's a boy, she giggles a little but it's not something hurtful. However, Cookie thinks she is ruining his life and starts to steal children only to get what he wants, making him incredibly insane. Even worse, he gets away with it.

He is annoying.
Plus "she" is a male

Gosh he is so annoying.

14 Fiona

While the idea of making a gender swap version of Adventure Time is interesting, it sadly wasn't executed very well. Not even Fiona is likable enough for me to care. She's supposed to be a female version of Finn but the end result of her character leaves a lot to be desired; she's just little more than a very one-dimensional Mary-Sue who acts like an annoying tomboy and makes the guys look like spineless wimps. She has no small amount of charm or likability since her personality is so bland and stereotypical.

Fionna isn't all like Finn. She's supposed to have the exact same personality as Finn. But she just lets boys walk all over her- something Finn WILL NEVER do.

Fiona is supposed to be like Finn, but the opposite gender. Fiona is one of those people that just hates themselves and is all soft. Finn isn't like that at all.

15 Betty
16 Breakfast Princess

My sister and I like Breakfast Princess because she's wise and kind-hearted. Sadly, she was treated like a punching bag in the episode "Princess Day" and it's all because of LSP and Marceline being so mean. Her reaction towards LSP's behavior is understandable because she barged into her kingdom uninvited (only for the food) and purposely made a scene while she was discussing something important with other princesses.

In Princess Day, she was so annoying to the point of me being on LSP's side.

17 Kim Kil Whan

Wait he did that stuff? Wow, I really need to catch up on AT. I have hardly watched any episodes past season 4.

He's damn mean, as he sued his father, got him and Finn in prison, and is really greedy.

18 Shermy

He broke everything in BMO's house!

19 Magic Man

His past and personality is very funny and interesting. I think, although he is a massive jerk, that he should be 24 on the best list

He is one of the most interesting characters in the series!

I think most of the characters on this show are annoying and stupid with the exception of a few, the show itself is stupid and annoying

20 King of Ooo

Personally I think this guy needs to replace Princess Bubblegum's title for worst character. PB isn't the bad guy as most people would think, HE is. The so-called King of Ooo plays dirty politics and for what? His own selfish desires? PB ruled to serve her people, not for her pleasures. I'm surprised he's not higher.

The King of Ooo was not a bad character. We were SUPPOSED to hate him. The writers made him the most unlikable jerk ever so his downfall would be all the more satisfying.

This guy isn't a king, he is so dumb. He is defeat PB on the kingdom elections. He is definitely number 1.

21 Peppermint Butler

He's creepy! If Princess Bubblegum knows how to do all kinds of science and things that others can't, why doesn't she know that peppermint butler is evil yet?

The episode nemesis made me want to smash him and burn him to ashes.

The episode "Nemesis" makes me want Susan Strong to eat him.

22 Susan Strong

Most of these characters are great in their own right, but Susan always seemed very bland to me.

People only hate her because she's new to ooo, and doesn't know much about it so she acts dumb

23 Bandit Princess
24 Hotdog Princess
25 Flame King

The worst parent I have ever seen in a cartoon. He is as bad a parent as Timmy Turner's parents

Personally I think FK is very selfish.
He had a young daughter and he sent her into the wild to die alone? Showing no mercy for a little girl and putting her into a lantern?
CHANGE THE VIEW DUDE

If the Flame King was real, I would rip his body apart and I wouldn't feel sorry for him

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