Imperiex is a supervillain appearing in comic books published by DC Comics. He was initially introduced as an adversary to the superhero Superman, before becoming a main antagonist for the crossover "Our Worlds at War".

"Our Worlds at War" is a comic book storyline, published by DC Comics in mid-2001. OWAW was a crossover storyline that spanned several different books, including several books starring Batman, Superman and Wonder Woman, The Flash, Green Lantern, and a number of supporting characters and books. Creators involved in the crossover included writers Jeph Loeb, Joe Casey, Mark Schultz, Joe Kelly, Phil Jimenez, and Peter David, and artists that included Mike Wieringo, Ed McGuinness, Doug Mahnke, Ron Garney, and Leonard Kirk.