IG-88D functioned as a bounty hunter and was an IG-88 assassin droid. This particular droid was one of five assassin droids of the same IG-series, all created by Holowan Laboratories. After being activated, these droids committed slaughter against their makers and fled the labs, scattering throughout the galaxy. At one point in its operational history, the droid was found at the remains of a starship, along with the bodies of several rebel fleet troopers. This assassin droid was armed with a pair of blasters.