The Martian Manhunter (J'onn J'onzz) is a fictional superhero appearing in American comic books published by DC Comics. Created by writer Joseph Samachson and designed by artist Joe Certa, the character first appeared in the story "The Manhunter from Mars" in Detective Comics #225 (Nov. 1955). Martian Manhunter is one of the seven original members of the Justice League of America and one of the most powerful beings in the DC Universe. Martian Manhunter has been featured in other DC Comics products, such as video games, television series, animated films and merchandise like action figures and trading cards. The character appeared in the series Smallville, played by actor Phil Morris. Martian Manhunter is also part of the core cast of the television series Supergirl and is portrayed by David Harewood. The character also appears on other Arrowverse shows. Harry Lennix portrays the character in the DC Extended Universe, making his debut under the guise of General Calvin Swanwick in the 2013 film Man of Steel; his Martian form is set to appear in Zack Snyder's Justice League in 2021. He's African Race?