He is initially Pirate Captain Austin's arch-nemesis and envies him a lot. But when his first mate Pablo committed mutiny against him during the quest for the scepter in Pirate Island, he ended his feud with Austin and worked together to stop Pablo from reaching the scepter and becoming king of all pirates. Once they stopped him and the crew, Blackmoose let Austin take the magic scepter and become king. Captain Blackmoose acts initially as the main antagonist before being betrayed by Pablo.
