Imperiex is a villain from the 41st century that escaped in the 31st century to destroy the Legion of Superheroes.
In the beginning of the 41st century, most of the galaxy had been destroyed by him. An underground scientist, K3NT, had created Superman-X to defeat Imperiex. When Superman-X didn't, he was sent to the 31st century to recruit the Legion of Super-Heroes. After a battle between the Legion and Imperiex forces, Imperiex was believed to be dead. Instead, he stole Superman-X warp-key (the technology that he used to travel in time with) and went to the 31st century. Since then, Imperiex and the Legion has battled several times.
During one of these battles, Brainiac 5 gave into his ancient Brainiac 1.0 personality and power, and claimed that he wished to join Imperiex. On a comm-screen, Imperiex's showed his new alliance with Brainiac 5 to the Legion of Super-Heroes. But, seconds after this announcement, Brainiac 5 murdered Imperiex and Validus, which was also shown on the screen. Brainiac 5's last words to Imperiex was that he would not bring chaos to the Universe as Imperiex would, but bring order. Brainiac allied himself with the Dominators in the position that Imperiex used to have.
- Super strength
- Energy Projection