Lu is an alien guard of the intergalactic communications center on Earth's Moon.
Lu first appeared in Birds of a Feather, where he was a guard. He confronted Ben and Simian and was saved by Ben when Simian tried to kill him. He lent his ship to Ben's Team in return for saving his life after Simian got away with his ship.
He makes a cameo appearance in Cosmic Destruction at the ending cutscene when Albedo is revealed to be Evil Way Big. Lu beats up Albedo with a wrench, as payback for him earlier destroying the communications center as Evil Way Big.
Ben 10: Alien Force
- Birds of a Feather (first appearance)