Science Boy is a nerdy superhero who wears red Ken doll like tights and a yellow cape. He was created by Ross when he was a kid. Science Boy's power is superhuman thirst for knowledge. Apparently, he is in love with Gravity Girl.
Science Boy appears in The One with the Mugging in which Phoebe admits to having mugged Ross when he was a kid. Though she took the Science Boy comic, she kept it for many years in a box that says crap from the street. She later returns it to Ross, to his delight.