Not evilest (genocides, infanticide, and the like are no fun to read or to think about), but toughest, strongest, most dominant. How do you become the Doctor Doom Supreme of this universe?
You don’t have to explain how you accomplish your task, just what you would do.
Fun answers encouraged; don’t be a bummer. (marking NSFW just in case to make mod’s lives easier)
The only things a villain needs to do in order to be a badass in Movieland is to walk slowly and look menacing while uttering a memorable catchphrase.
That doesn’t necessarily make them successful at their primary objective, since almost all Movieland villains lose eventually (they tend to leave their Plot Armor at home), but being remembered by the other residents forever is its own version of victory.
Unfortunately I’m not clever enough to have a good catchphrase, so I’m a minor henchman at best.