Peter Petrelli

Peter Petrelli is the main male protagonist in the NBC superhero science-fiction series Heroes. He is an evolved human who can mimic the abilities of others around him and the younger brother of Nathan Petrelli. Although he loses his original ability and all of his mimicked abilities to his villainous father in the third season, he injects himself with the Genetic Modification Formula and obtains a similar but less potent ability: he can now replicate the abilities of others via physical contact and he can only hold onto one ability at a time - once he replicates a new ability, he instantly loses the old one. However, depending on what ability he replicates, he is still powerful. He is the 'black/white sheep' of his family, being the only one who isn't a backstabber, manipulator, murderer or sociopath (his father was all four of these things). He is frequently at odds with his brother because of his idealistic views. He and Nathan are notably two of the only characters to appear as regulars in all four seasons, along with Claire Bennet, Hiro Nakamura and Matt Parkman.

He is portrayed by Milo Ventimiglia.