Ogrek

A Morok commander was a Morok stationed on Xeros, and was the second in command of Xeros. When the Xerons raided the armory, he went to Lobos' office, and both of them decided to kill the First Doctor and his companions, but the rebels attacked the office and shot and killed both of them. (TV: The Space Museum)

Behind the scenes
He is given the name of Ogrek in the novelisation.