J'onn J'onzz (Earth-1: Post-Crisis)

"Some call me the Martian Manhunter."

- J'onn J'onzz to Bruce Wayne

J'onn J'onzz is a Green Martian who poses as a Lieutenant General in the United States Army and later the United States Secretary of Defense under the alias, Calvin Swanwick. He is also a member of the Justice League as the Martian Manhunter.

Steppenwolf's Invasion
After Superman's death at the hands of Doomsday, J'onn posed as Clark's adoptive mother Martha Kent to help a grieving Lois Lane. Later, after the Justice League had defeated Steppenwolf, J'onn met with Bruce Wayne, warning him about Darkseid's quest for the Anti-Life Equation and offering his help.

Powers

 * Green Martian Physiology: J'onn possesses various superpowers due to his Green Martian physiology.
 * Flight: J'onn is able to fly.
 * Shape-Shifting: J'onn is able to change his appearance at will to anything he wants.
 * Telepathy: J'onn is a telepath and so is capable of reading people's minds.

Abilities

 * Acting: J'onn is a great actor as he was able to fool humanity for years into thinking he was one of them.
 * Leadership: J'onn is a capable leader as he was capable of working his way to becoming a lieutenant general.

Current Equipment

 * Martian Manhunter Suit: J'onn wears a black and red protective suit whilst operating as Martian Manhunter.