Doctor Ub’x

Doctor Ub'x is a DC comics supervillain primarily associated with the Green Lantern franchise - he is a personal enemy of the alien Green Lantern known as Ch'p.

History
Leaving his home world of H'lven, the power hungry Doctor Ub'x raised a mighty space armada which enabled him to conquer half his galaxy. He then returned to H'lven to conquer his home world as well with his allies the Crabsters. The H'lvenites were a peaceful, arboreal race, Ub'x believed it would be an easy victory, especially after his armada killed the B'rr, the Green Lantern of Sector 1014. The Crabsters, the most relentless beings in Dr. Ub'x's empire, cut down any resistance offered. H'lven was claimed by nightfall