On Earth, these machines destroy Topeka, Kansas, seven other places on Earth's seven continents and Atlantis, when they began to dig into Earth to ready it for Imperiex's final demolition.
When the alien being Imperiex invaded Earth during the Our Worlds at War storyline the Amazons joined in the battle which lead to Hippolyta's death.
Imperiex |
Grayven next appeared during the Imperiex crisis, as part of an alien alliance that also included Maxima, Starfire, Adam Strange, and Darkseid.
He has been working with Imperiex when it came to stealing items and has been pursued by Nemesis Kid (who was pursuing Grimbor on behalf of the Science Police) and the Legion of Super Heroes.