10 Worst Things Martian Manhunter Has Ever Done
4. He Became An Evil Zombie
During the Final Crisis, J'onn was incinerated to death by a supervillain called Libra. As J’onn died, he sent a telepathic goodbye to all his friends. The Justice League transported his body to Mars for his funeral, which was eulogised by Superman himself.
Since J'onn is seen as the purest member of the team, his demise was heart-breaking. But what followed was even worse. A death-controlling demon called Nekron forged an army called The Black Lantern Corps, which was composed of deceased heroes and villains, including Martian Manhunter. J'onn tracked down the Green Lantern, Hal Jordan, and the Flash, Barry Allen, saying that they should join Nekron since they have both cheated death in the past.
While under Nekron's spell, it is next to impossible to reason with a Black Lantern. As far as the Justice League was concerned, J'onn was their enemy since he would stop at nothing until his former friends were wiped out.
Thankfully, an entity called... The Entity resurrected several Black Lanterns (including J'onn), causing Nekron to lose his power. With J'onn alive once more, he rejoined the Justice League and his friends.