>>149502218 (OP)This post is phrased too awkwardly. I assume you are trying to ask, "What character has every right to be a villain but isn't? And if they were a villain, what would they do?" The green text makes no sense like at all.
As for the post itself, I would say Stan Pines from Gravity Falls. Spoilers! He got abandoned by his family, and his own brother only reached out to him decades later because he wanted a favour. Or his brother could also be a good villain. He spent decades in some kind of weird "sci-fi" dimension.
As for what they would do. Hmm I guess Stan could find more ruthless ways to profit based off his knowledge of "weird stuff". And his brother could have killed Stan and tried to take over the world.