White Martian

WHITE MARTIAN: As a race, there are nearly no other aliens more terrifiying than the White Martians. Powered with super-speed, strength, telepathy, and shape-shifting, the White Martians are responsible for the mass genocide of the Green Martians. A unnamed White Martian has attemped to kill J'onn J'onzz, the last surviving Green Martian. He was captured by Supergirl and The Martian Manhunter and is imprisoned in the D.E.O. After imprisonment, it tells Kara that there are millions more ready to attack. Kara tells the White Martian that she'll be ready for them, too.