Fred and Skunk are brothers. The oldest; Skunk (who’s real name can be found by reading the S.S.S. Chronicles), middle; Fred and youngest; their sister Felisity. Fred, is the inventor at Heartwood Collective. Skunk, is the head of S.S. (Skunk-Spies). And Felisity is an agent at S.S., as well as the owner of R7Software Industries. And I know it can get confusing but Skunk Workshop is actually run by Fred.