Martian Manhunter (real name J'onn J'onzz, alias John Jones) is a Martian and a founding member of the Justice League. He is Miss Martian's mentor and uncle.
Martian Manhunter generally prefers to take the form of a tall, green-skinned humanoid. His head is completely bald, and his face is oddly proportioned, with heavy brows, thick lips and red eyes.
His costume is primarily black, with red accents, and a large red belt and x-shaped straps across his chest. He always wears a blue cape that is fastened by gold clips.
In his civilian identity of John Jones, he takes on the look of a bald, middle aged African American male with brown eyes.