Top 10 Worst Adventure Time Villains445956 Not the most evil ones, but the ones who are just plain bad.
The Top Ten
Slime Princess's scammy sister whose evil was just mediocre. (Voiced by Katie Crown) - 445956
This guy literally defines "jerk." (voiced by Steve Agee) - 445956
Just straight up creepy. (Voiced by George Takei) - 445956
So pathetic they made him a hero a few seasons in. (Voiced by Tom Kenny) - 445956
If this guy was my dad, I'd run to an adoption center. (Voiced by Stephen Root) - 445956
This guy was mostly just a bully disguised as a powerful knight. 9Voiced by Peter Stormare) - 445956
She is a vampire, hence her name. 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. >:( - (voiced by Olivia Olson) - DinoLover4242
DinoLover4242, tell that to Blade from Marvel.
If she was more of an actual villain I would put her higher. (Voiced by Thurop Van Orman) - 445956
The worst of the Stakes villains. (Voiced by Ron Funches) - 445956
His design is creepy. (Voiced by Sam Marin) - 445956
Dumb brat. (Voiced by Vincenzo Rauso/Collin Dean) - 445956
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279 days old