Yon (DU)

In the Dark Universe, Yon was the ruler of Teruga Prime and the shepherd of the entire Terugan species. He was in command of an Imperial Fleet, which he used to nuke the planets of species he considered threats to the Terugans, such as Earth and Shroom's homeworld. When he had made enough money from war, he paid for a giant impenetrable defence grid to be installed around Teruga Prime, sealing the planet off completely from the rest of the universe.