He was initially introduced as an adversary to the superhero Superman before becoming a main antagonist for the crossover "Our Worlds at War".

[1] Imperiex has made limited appearances in media outside comics, with Phil Morris voicing him in the animated series Legion of Super Heroes.

They destroy Daxam, Almerac, Kalanor, and Karna, among other planets, before Brainiac absorbs Imperiex's powers and consciousness.

Rock, Maxima, Aquaman, Guy Gardner, Hippolyta, Sam Lane, and Steel are killed or presumed dead.

The Legion of Super Heroes incarnation of Imperiex makes a non-speaking cameo appearance in Scooby-Doo!