Dark Xyron

Dark Xyron was a space demon created from the Corrupt One who served under Toaros Mellex in the Dark Council. After attempting to steal the Toovials, he was banished to Xyrox. He ate various alien races to satisfy his hunger. He was defeated by Rex, and later finally killed for good in 2032. His brother, Dark Zetron, was consumed by the Xy'tron and killed.