10 Worst Things Martian Manhunter Has Ever Done

In the animated series, Justice League Unlimited, Superman seemingly died, which caused the teammates to become more ruthless and intolerable when facing supervillains.

When Thanagarians invade Earth in the Starcrossed storyline, Batman, Flash, and J'onn try to make one of the aliens talk so they can learn of the invaders' plan. When the Thanagarian refuse to co-operate, J'onn uses his psychic powers to infiltrate his mind.

Although the Thanagarian does everything in his power to resist, J'onn pushes himself harder than ever, knowing that countless lives are at stake. He ventures so deeply into the Thanagarian's mind, J'onn renders him comatose. Having gathered the data he needed, J'onn and the others flee.

At first, the viewer assumes J'onn's psychic probe simply knocked the poor guy out. But after J'onn leaves, the camera pans down to the alien, showing that his eyes are wide open, proving that he's catatonic. In the show, J'onn was usually the one to make sure the hot-headed heroes like Hawkman, Green Arrow, and Batman didn't go too far. However, this moment showed that the kindest person can become unethical when push comes to shove.