Rick Sanchez (Dimension C-137)

"'- Birdperson, you always stick up for rick but, he doesn't care about anyone but himself, he doesn't think about the consequences of anything he does'""'-And as a result he has the power to save or destroy entire worlds, and he is the reason you and I know each other, and the reason I'm alive at all.' (Conversation between Birdperson and Morty)"

Rick Sanchez is a genius scientist and sociopath who struggles with alcoholism.