Alfren Cheno was a human male commander in the Imperial Navy in the years before the Galactic Civil War. He commanded the Thunder Wasp during the battle over Umbara with his first officer Captain Thrawn. With Thrawn's help, Cheno and the crew of the Thunder Wasp was able to turn the tide of the battle despite the direction of Admiral Carlou Gendling. He was forced to retire afterwards due to Gendling's insecurity about the battle.