Callron, sometimes referred to as Callron the Younger, held the rank of Moff and served on the Moff Council within the Imperial Remnant. It is probable that Callron the Younger was related to Garret Callron, who governed the Clacis sector as Moff during the Galactic Civil War. In the year 44 ABY, specifically during the Lost Tribe of Sith emergence, he aligned himself with Admiral Daala and the rebellious Moffs, opposing Jagged Fel, the Imperial Head of State. Concurrently, he and his fellow Moffs engaged in smaller skirmishes, one being the battle at Muunilinst, which ultimately resulted in the Imperial election that saw Vitor Reige become the new Head of State.