Radiation Production: Negative Man has the ability to generate a black, electrical energy being composed of an as of yet unidentifiable radioactive substance from within his own body. Larry's mind and consciousness resides in the being while his body is left behind as a husk. Originally, he could only leave his body for a total of sixty seconds. By now he has trained himself to last much longer before turning to his body at will.
Energy Absorption: Negative Man can absorb thermal energy and convert it into an explosive discharge tied to his other thermal abilities.
Phasing: Negative Man can alter his density to pass through solid objects. Phasing through biologicalmaterial causes pain to the affected target. Lead is the only substance that he cannot phase through.
Energy Projection: Negative Man can generate waves of intense heat, causing it to explode or tighten it into a concussive blast.
Power Limitation: Larry's continued use of the Negative Man is hampered by a potentially fatal restriction. If Trainor is ever separated from the energy being for more than one minute, he would lapse into a coma and eventually die. Trainor is always careful to recall the entity back to his person before the sixty-second time limit expires.
Negative Man made his first appearance in My Greatest Adventure # 80 (June 1963).