I'm the Bad Guy is the fifth song and the main villain song of My Fair Hatey in Wander Over Yonder. Closed captions for the episode describe the tune playing while it is sung as "sultry music".
Lord Dominator: I'm not the damsel in distress. I'm not your girlfriend or the frightened princess. I'm not a little bird who needs your help to fly. Nope... I'm the bad guy.
All these former villains that you see, Each of them, with shaking knees, has knelt before me. So I'm not your teammate or your partner in crime. What am I, boys?
Captured Villains: She's the bad guy.
Dominator: Oh, it's magic To watch a planet Shrivel up and die. Oh, it's thrillin' To be a villain. I destroy their homes and then I watch them cry.
(mecha voice) 'Cause I'm the bad guy!
Peepers: Oh my grop! She's not trying to conquer the galaxy so she can rule it! She wants to destroy it! Man, that's evil!
Lord Dominator: Oh, ain't it fantastic? I see something, I blast it. And let me tell you why. (normal voice) I've always had a weakness For barrenness and bleakness. I crush all your hopes and then I watch you cry.
See, I find this business rather fun. I don't want your assistance or your adulation. I'll vaporize your galaxy and bid ya bye-bye. Why? Come on! Guess!
Wander and Lord Hater: Cause you're the bad guy?
Dominator: Or, well, girl. (maniacal laughter)