The 'I'm a Villain, Not a Monster' meme is a popular reaction template used to distinguish between lighthearted mischief and genuinely disturbing behavior. While the specific sentiment is often associated with the ethos of characters like Ralph from Disney's Wreck-It Ralph or the Joker's refusal to work with Nazis in comics, it has evolved online into a way for users to express that even they have moral boundaries. It typically features an antagonist reacting in horror or disgust to something truly 'monstrous' or socially unacceptable. The meme is a staple for calling out weird food combinations, questionable social habits, or extreme internet opinions, proving that everyone has a line they simply will not cross.