If you are building a list of the most infamous bounty hunters in the Star Wars universe, most people would start with Boba Fett. His story is known far and wide by star wars fans from every generation, but it could be argued that #2 on that list is not Boba’s father Jango, but Trandoshan bounty hunter Bossk.
Bossk is first seen in Empire Strikes Back as one of the contingent of bounty hunters gathered by Darth Vader, but his story in Star Wars starts long before that day on the Executor. During the prequel trilogy timeline, specifically during the Clone Wars television show, Bossk was known as one of the most feared bounty hunters in the galaxy and spent most of his time kicking around with Aurra Sing and Castas. This trio of killers formed a surrogate family for young orphan Boba Fett after his father was killed by Jedi Master Mace Windu on Geonosis.
Bossk and Aurra Sing made it a point to train Boba in the art of bounty hunting while also seeking to exact vengeance on man who killed his father. Their plot to kill Windu was foiled by Jedi Padawan Ahsoka Tano, and Bossk and Boba were arrested and sent to a Republic prison where they would eventually break out and make their way back into the underworld of the galaxy.
After the fall of the empire, Bossk continued to take bounty hunting contracts, but also worked as a mercenary for the Galactic Empire. He was last seen on screen in Star Wars in Return of the Jedi at Jabba’s Palace.
Bossk was voiced by Dee Bradley Baker in Star Wars: The Clone Wars. He was played by Alan Harris in ESB and Trevor Butterfield in RoTJ.