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My grasp on sanity remains... absolute. Isn't that right, Agent Stone? [picks up the Rock named "Agent Stone"] Why don't you get a head start? [throws the rock] Do some rock-connaissance! HAHAHAHAHA! ROCKONNAISSANCE! COME ON, THAT'S HILARIOUS! WHAT'S THE MATTER WITH YOU?
~ Dr. Robotnik while stranded on an alien world.
Did I ever tell you what the definition of insanity is? Insanity is doing the exact... same f***ing thing... over and over again, expecting... shit to change. That... is crazy; but the first time Somebody told me that... I dunno, I thought they were bullshiting me, so boom – I shot him. The thing is, okay... He was right. And then I started seeing: everywhere I looked, everywhere I looked, all these f***ing pricks, everywhere I looked, doing the exact same f***ing thing... over and over and over and over again thinking: "This time, it's gonna be different; no, no, no, no, no, please... This time it's gonna be different." ...I am sorry, I don't like the way you are looking at me... Okay, do you have a f***ing problem in your head? Do you think I am bullshitting you? Do you think I am lying? F*** you, okay?! F***. YOU! It's okay, man. I'm gonna chill, hermano. I'm gonna chill... The thing is... alright, the thing is: I killed you once already... and it's not like I am f***ing crazy. It's okay... It's like water under the bridge. Did I ever tell you the definition... of insanity?
~ Vaas Montenegro giving his famous "definition of insanity" in his monologue to Jason.

This category is for villains who have any type of psychological disorder and can be deemed as mentally unstable or villains suffering from mental disorders such as post-traumatic stress disorder (PTSD) or bipolar disorder, among others.

These characters can be tragic, since the trait of being mentally unstable is not being fully aware of their actions and not being in full control of themselves. Examples of which include many "Yanderes", such as Kotonoha Katsura, Bae Su-mi, and Anniyan. In addition, many people (both in fiction and real-life) suffer heavily from mental illness and can struggle on a daily basis, so villains who have difficulties with their mental health can often be seen as sympathetic, if not, redeemable. However, this is not always the case. This case is called "Negative Yanderes", and these types of characters are mentally unsaved, and in this type, most of them eventually destroy themselves despite the progress of the work. (e.g Esdeath and Homura Akemi.)


  • To qualify as mentally ill, a character must have horrible behavior, beliefs and commit actions which do not stem from their cultural beliefs unless it severely hinders the character's activities.
  • Characters who have simple phobias (e.g. Hopper and Sylvester J. Pussycat Sr.) do not count, as nearly everybody has at least one phobia. They should go under Paranoid instead of this category.
  • Not all villains are mentally unstable when they first appear. While some are, others who were sane to begin with suffer experiences that causes their sanity to snap, like Andrew Detmer and Lucy. The primary causes for this are prolonged abuse and humiliation. A severe-enough degree of fear can do it too, but less commonly.
  • Psychopaths/sociopaths will NEVER fall under this category as they are fully aware of reality and are not crazy in the same way the latter are, whereas mentally ill villains are not completely aware of reality and have limited views on it.
  • Non-humanoid entities and demons never count (e.g. Valak), regardless of how evil they can be. To them, such acts are normal or a simple spiritual/cultural function. The only time non-humanoid entities or demons can count for this category is if they clearly display human-like intelligence (e.g Skitzo, Bendy (Bendy and the Ink Machine), Cartoon Cat and Zomom).
  • Simply having mental illness does not automatically make someone a villain, as many heroes can also be mentally ill. Mental illnesses can effect morality only to a very limited extent, as more often than not, bad people choose to be what they are.
  • Villains who only feigned mental illnesses and don't actually have any do not qualify.

See Also

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