Writer Len Wein and artist Jim Starlin created the first version of the character, who debuted in DC Comics Presents #27 (November 1980).

Debuting in the Bronze Age of Comic Books, Mongul has been featured in other DC Comics-endorsed products such as animated series, video games, a direct-to-DVD film, and merchandise such as action figures and trading cards.

[5] In his first appearance, Mongul kidnaps Superman's friends Lois Lane, Jimmy Olsen, and Steve Lombard and threatens to kill them unless the hero brings him a key to activate Warworld.

He murders Gavyn's sister and obtains a Sun-Eater that he attempts to use to destroy Earth's sun before the Justice League of America and Legion of Super-Heroes stop him.

[13][14][15][16] After being deposed by Sinestro, Mongul allies with the Pale Vicors, a group who loot planets and nullify their inhabitants' ability to feel emotions.

[6][7][8][15][16][19][21][22][23] For a time, he was also part of the Sinestro Corps, having access to all that it entailed; i.e., the ability to create fear-based energy constructs and gain power from the fear of others.