3. Martian Manhunter
J'onn J'onzz is sneakily powerful. The most powerful member of The Justice League, J'onn has so many amazing abilities that he always seems to down play them, at least he does in the cartoons. J'onn, the Martian Manhunter may be from Mars but he's one of Earth's biggest and most faithful allies. Thank god he's a good guy. J'onn's powers seem endless. With the ability to read minds, shape shift into whatever he wants, x-ray vision, the ability to fly, invulnerability, super human strength that's as powerful as Superman's, invisibility which gives him the ability to phase through walls, J'onn's in a league of his own. There's nothing he can't do and that's just scary to think about. With the ability to adapt to any situation, J'onn J'onzz is an absolute powerhouse. His weakness? His most commonly known weakness is fire. Although in the Trial by Fire arch he over came it to a certain extent. So who really knows, which just makes him all the more dangerous.