Firestorm is a composite being formed by the fusion of two men, high-school student Ronnie Raymond, and nuclear scientist Martin Stein. Their stats are as follows:
The merger can be initiated by either man; Firestorm appears in the place of the one who willed the union, while the one who did not will it disappears altogether. Their minds remain separate for the most part, and since Stein was unconscious when Firestorm was originally created, the Ronnie Raymond personality is in control of the Firestorm persona. Stein's consciousness exists as a voice in the back of Firestorm's mind, observing and giving advice.
HARD RADIATION EMISSION:
Nuclear Physics * Basketball
The Justice League of America
Nobel prizewinning physicist Professor Martin Stein designed the Hudson Nuclear Facility, a fully automated nuclear generating plant. His assistant, Dr. Danton Black, falsely accused Stein of stealing his plans for the plant, causing the government to forbid the plant's opening until Black's charges were investigated. Stein, however, was determined to start the plant's operation that night.
That evening high school student Ronnie Raymond decided to join Edward Earhart's anti-nuclear power group, which was protesting the facility opening. Raymond, however, objected when he learned that Earhart planned to blow up the plant. Stein activated the plant's nuclear reactor. Earhart knocked both Raymond and Stein unconscious and left them in the main reactor room with a bomb. Raymond revived moments before the bomb exploded, increasing the scale of the ongoing nuclear reaction. Raymond and Stein were bombarded with radiation and fused into the Nuclear man called Firestorm. Firestorm captured Earhart, became a super-hero, and eventually joined the Justice League of America.