IG-88 was a rogue masculine IG-86 sentinel droid who worked as a bounty hunter. Following the Battle of Hoth, he and several other bounty hunters were summoned by Darth Vader to the Executor and hired to track down the Millennium Falcon and her Rebel crew, though it was ultimately IG-88’s chief rival, Boba Fett, who collected the bounty after pursuing the Falcon to Bespin. [SOURCE]

I guess this works for the 13th gift and fits into the Imperial series we’re having. Was worried when I first opened him that he was a battle droid. Given the head I am certain that is not the case. Always good to have a bounty hunter around in case someone gets lost from the set.