Davan subjected himself to an excruciating training process to become a member of the Syfon Warrior regiment of Xandarian
Nova Corps. He quickly rose through their ranks to become one of their elite operatives. While performing his duties he was forced to land his damaged starship on the planet Earth, and in doing so he became amnesiac for a time and he became affiliated with
Condor and fell into conflict with
Nova (Richard Rider). After regaining his memory he returned to Xandar and became a member of the
Champions of Xandar. Powerhouse died fighting the forces of
Nebula.