10 Worst Things Martian Manhunter Has Ever Done
6. He Made Earth A Target
J'onn was frustrated when Erdel transported him to Earth against his will. However, Erdel actually saved J'onn's life since his home planet, Mars, was being ravaged by an inferno at the same time. The fire incinerated the planet's surface, wiping out all of J'onn's species. Because of this, J'onn is often known as the last Martian.
However, this isn't exactly true. J'onn is the last GREEN Martian. The White Martians survived the engulfing of Mars. White Martians are savage warriors who refused to co-exist with the Green Martians and so, were banished to an extra-dimensional prison (similar to Superman’s Phantom Zone).
After the Green Martians were exterminated, the White Martians were released from their confinement. Their greatest desire is to kill J'onn, as it would result in the extinction of the Green Martians.
Learning that he resides on Earth, the White Martians invaded the planet and have wreaked havoc upon J'onn and his teammates for years. They have brainwashed humans to see the Justice League as villains, destroyed the team's Watchtower, and killed superheroes including Metamorpho. Although none of the superheroes blame J'onn for the White Martians' actions, he feels guilty as they are only attacking Earth because of him.