10 DC Characters Weaker Than Superman Who Could (In Theory) Kill Him

3. Sun Boy

Sun Boy is a superhero from the future in DC Comics but who, through the wonders of time-travel, has indeed encountered the heroes of the present on numerous occasions - including Kryptonians like Superboy.

He has the ability to tap into internalised solar power, allowing him to project luminance and heat to whatever degree he desires, as well as manipulate it however he wishes. As a result, there's no reason why he couldn't rip the solar power out of Superman, in the right circumstances, and sap his energy until he was dead.

He is also able to project light bright enough to lead to permanent blindness and that could be seen from miles away in space. He can concoct heat within seconds that can melt through steel or be tossed as fireballs. In the postboot reality, Dirk also had infrared vision and could detect heat patterns. That said, none of those powers would do much to Superman in battle and he has no real physical strength, speed or durability to speak of, so all in all he is nowhere near as powerful as the man of steel.