The Human Flame is a comic book character, a supervillain in DC Comics' main shared universe.
He first appeared in Detective Comics #274 (December 1959), and was created by Jack Miller and Joe Certa.
The character was not used again for 48 years, before reappearing to play an important role in Final Crisis. The writer, Grant Morrison, explained why he picked such an obscure character:
Human Flame is the featured character in the six-issue limited series Final Crisis Aftermath: Run!, written by Matt Sturges, with art by Freddie Williams.
Michael Miller, the Human Flame, was a minor villain who, early in his career, was captured by the Martian Manhunter and incarcerated, He was the first actual supervillain the Manhunter faced. After this one off appearance, he was not seen in publication for nearly fifty years. In 2008's Justice League of America (vol. 2) #21, he was seen robbing a bank, leading to a reluctant confrontation with Red Arrow and Hawkgirl. It was stated in this issue that in the context of the DC Universe, eight years had passed since his arrest in Detective #274.