Groggin was an Ugnaught engineer who supervised Smelting Core D, one of Cloud City's most efficient metal processing incinerators. In 3 ABY, during the Galactic Civil War, Groggin discovered in the refuse awaiting his incinerator a Human hand clutching a strange metal cylinder, which was actually the severed hand and lightsaber of Jedi Luke Skywalker, recently lost during his fateful Cloud City duel with the Dark Lord Darth Vader. When Vader appeared in the smelting chamber demanding the hand and lightsaber, Groggin instead suggested they negotiate for the items, unaware of the Dark Lord's identity. Unamused, Vader killed Groggin and claimed his prize, bound for the personal vaults of the Emperor himself.