 Discovering that one of his faulty devices is capable of generating a beam capable of "melting" anything composed of iron, Horgan redesigns the device so that it can be strapped to his chest, and after donning a costume adopts the alias the Melter.As the Melter, Horgan becomes a professional criminal and embarks on a campaign of industrial sabotage against Stark, hoping to ruin him, eventually encountering Iron Man after Stark is told he could lose his government contracts, though when he first met Stark he succeeded in knocking him out.Despite damaging the hero's armor and forcing Iron Man back, the Melter is defeated when Stark builds a temporary duplicate armor composed of aluminium, but leaps into the sewer, though Stark is unaware whether he was killed or not.