Bossk was a male Trandoshan bounty hunter and the son of Cradossk who was known for hunting Wookiees. During the Clone Wars, Bossk worked alongside fellow hunters Aurra Sing and Castas to mentor the orphaned Boba Fett. Their scheme to kill Fett's hated enemy Mace Windu resulted in Fett and Bossk's arrest. After a stint in prison, Bossk worked in Fett's syndicate of bounty hunters, taking jobs for clients including Otua Blank and Asajj Ventress.