J'onn J'onzz (Earth-1955)

"It's beautiful isn't it? It almost reminds me of home. I don't think the human race understands just how precious this planet is."

- - Martian Manhunter to Hawkeye

J'onn J'onzz was a former military commander on his homeworld of Mars, losing all of his race and family when the Chitauri. Captured by the Chitauri, J'onn was able to contact other powerful individuals when the race invaded Earth, eventually forming with them the Justice League.