Chuck is the ever faithful technician that supports Atlantis with reliable info, correct gate addresses, and here and there some dry remarks. Sergeant Walter Harriman is his Earth counterpart.Chuck never gets enough credit for all his work. He gets taken for granted in most episodes, sometimes even rudely shoved aside and ignored when he tries to come up with an idea. The faces he makes when this happens, are worth it, and are an important part of the character.Funny: Chuck is the actor's real name, there is no mention of the character's last name in the show. He does get called 'Chet' by Richard Woolsey during an introduction of the Stargate Operations team.