J'onn J'onzz

J'onn J'onzz is a Green Martian who was a law enforcement officer on Mars as part of the Manhunters. After losing his wife and daughters, J'onn came to Earth to begin a new life under the guise of a human named John Jones. Using his telepathic and shapeshifting ability, J'onn works as the deputy director of the D.E.O. and as a member of the Justice League as Martian Manhunter.