Raised in Texas, Dr. Sheldon Cooper is the roommate of his colleague Leonard Hofstadter and Penny's neighbor. His friends are astronaut Howard Wolowitz and Raj Koothrapali. He is bigger collector and comic book fan than his friends, which Sheldon also wears cloths with superhero logos on them, where he mostly wears a Green Lantern shirt. He never understands jokes and sarcasm, drinks coffee, drives, touches anyone, (at least up until he started to date Amy Farrah Fowler) is very social, or lets anyone go into his bedroom or sit in his spot on the couch. Sheldon considers Whil Wheaton and Leslie Winkle his arch-enemies and as stated in "The Codpiece Topology," Leslie is the Dr. Doom to his Mister Fantastic and Doctor Octopus to his Spider-Man. When saying a certain joke, Sheldon will say "Bazinga!" or when somebody else does, he laughs in a strange way.