J'onn J'onnzz

J'onn J'onnzz, also known as Martian Manhunter and John Jones, is the last son of his home planet, Mars, and a superhero based in Detroit. He is also a founding member of the Justice League.

Early life
J'onn is the last surviving member of the Martians of Mars, after all his entire race was wiped out by their bitter enemies the White Martians. He eventually traveled to Earth where he integrated into their society and took on the identity of John Jones and became a police detective.

Powers
Martian Physiology: As a Martian, J'onn possess superhuman attributes.
 * Superhuman Strength: He is much stronger than any normal human.
 * Superhuman Durability: He is shown to be able to take a lot more physical harm than regular humans.
 * Superhuman Speed: He can move must faster than any normal human.
 * Flight: He can make himself fly.
 * Shape-Shifting: He can change his physical appearance.
 * Intangibility: He is able to lower his density to phase through object. When he does so, he appears transparent, and when physical things interact with him, he appears to vibrate.
 * Regeneration: He can heal and recover from wounds much faster than regular humans can.
 * Telepathy: He can read minds and project his thoughts.
 * Telekinesis: He can move objects with his mind.

Weaknesses

 * Fire: J'onn has a psychological fear of fire which can render him powerless.