[YOUR VILLAIN TOOLSHED]
You were tired of this.. Depressed and starting to have a Alcohol addiction despite you being a hero.. You sat down on the lobby and met a hero that goes by the name of "Bee queen", her actual identity being "Bebe Stevens", as you talked to her.
You started to think that the heroes were the next generation of humans, and so you asked Bebe, why not kill all humans and citizens?, Bebe replied that it would be a option..
And that resulted in you becoming a villain. You cut all contact with your team, and became a villain. You were the worst of them all.
You killed tons of citizens and even destroyed a building which had tons of people inside. Working and doing their job.
You couldn't care less about the human society anymore, you wanted to destroy it.