Serpent is the main antagonist of Mega Man ZX. He is a Model W Mega Man and the president of Slither Inc., a company that specializes in the excavation of ancient technologies such as Biometals to practice public defense and energy production. though Serpent is considered a hero by the public, he is in fact a corrupt man that achieves his goals by any means necessary. Serpent considers survival of the fittest necessary for progress, because evolution requires sacrifice.