Aurra Sing, a Palliduvan who was Force-sensitive, headed a group of bounty hunters known as Aurra Sing's crew. Within this crew, Boba Fett began his journey in bounty hunting during his initial days. Bossk and Castas were also part of Aurra Sing's crew, assisting Boba in his pursuit of Jedi Master Mace Windu; however, Sing killed Castas in a bar located on Florrum.