Wikipedia
Despero
Despero is a fictional character that appears in comic books published by DC Comics. The character first appears in Justice League of America #1 (October 1960) and was created by Gardner Fox and Mike Sekowsky.
Debuting in the Silver Age of Comic Books, the character has appeared in both comic books and other DC Comics-related products such as animated television series and feature films, trading cards, and video games. He is an enemy of Martian Manhunter, Booster Gold, and the Justice League.
In 2010 IGN named Despero the 96th greatest comic book villain of all time.