Original biography

Scott Fisher was a kid who developed the superpower of generate a huge quantity of heat through his hands. This was caused because when he was a child, he was left by his father at work playing around toxic waste containers. It is unclear if Scott just touch the waste or if he also ingested some of it, but what was clear were the effects. The heat he produced was so high hw had to use special gloves to not melt anyting he could touch, as Scott couldn't control the heat. The leader of the Doom Patrol, Arani Desai, recruited Scott as a new member and put him along newest recruits Karma and Lodestone. He would face Scharpnel, the plastic men of Garguax and helped Superman against Metallo.

A sad secondary effect of the powers was than the same toxic waste than gave him his abilities also gave him leukimia, and as Joshua Clay revealed to him, the illness returned and eventually will cause his demise. Scott asked Josh to keep the secret about his condition and as his medic, Josh complied.

When the gene-bomb of the Dominators exploded in the upper atmosphere, after the failed invasion of the Alien Alliance, Scott was affected by it, causing his powers to overload, ultil he fainted in a coma. This, added to his already sick condition caused his death in bed, at least, peacefully.

New 52

Scott Fisher (called Scorch) and Karma are in Maryland as the Crime Syndicate take over the planet. Scott and Karma were tasked with saving people, but were separated from the rest of the Doom Patrol (Celsius, Tempest and Negative Woman) and decide to meet under an overpass for Celsius. Scott and Karma argue over their place as heroes, Karma arguing that these powers are a curse and they shouldn't be heroes, and Scott saying they could save the planet, and its their duty. As they argue, Johnny Quick and Atomica come in holding a dead Negative Woman. Atomica battles Scott off to the side as Johnny unleashes a flurry of punches at Karma. They all go through him and Karma remarks how nothing can hit him if he doesn't want it too. Quick remedies this by quickly setting up a multitude of bombs around Karma and detonating them. Scott loses track of Atomica and desperately tries to escape when he hears Atomica, who shrunk down into his head. Scott apologizes to Karma (now dead), saying he thought they could save the world. Atomica kicks part of Scott's brain, causing him to lose control of his nervous and cardio systems and dying. Atomica leaves, saying "They all think they can save the world, don't they?". It is unknown if Celsius and Tempest survived.