Armando Muñoz, also known as Darwin, is a mutant character from Marvel Comics who has been affiliated with the X-Men. He possesses the remarkable ability of reactive evolution: his body alters and adapts in order to survive in any environment (eg. growing gills when underwater). He appears in the film X-Men: First Class as a member of Division X, portrayed by Edi Gathegi.
Darwin worked as a taxi driver. While in this capacity, Charles Xavier and Erik Lenscherr asked him to join their CIA-sponsored mutant group. Darwin met his teammates, displayed his powers, and partied with them. Following the Hellfire Club's assault on the Division X facility, Sebastian Shaw attempted to recruit the young mutants into his ranks. Angel Salvadore joined in, while Havok and Darwin tried to stop her. It was during this attempt that Shaw absorbed Havok's energy blast and killed Darwin with it.