The Empire Strikes Back
IG-88 teamed up with Hondo Ohnaka to collect the bounty on Crimson Dawn lieutenant Qi'ra's head. Tracking Qi'ra down, IG-88 and Hondo managed to apprehend Qi'ra. Turning the bounty hunter and the pirate against each other, Qi'ra convinced IG-88 to collect the bounty on Hondo instead of the bounty on her. Attacking Hondo, IG-88 was quickly stunned and put in binders. After Qi'ra had similarly tricked and apprehended Hondo, IG-88 was led away by Qi'ra so that she could collect the bounty on his head.
Later, IG-88 pursued Princess Leia Organa on Garel, seeking a data-tape in her possession of Imperial base locations. Organa was assisted by Sabine Wren, who identified the droid, and the pair fled as the assassin opened fire in the corridors of Garel City Spaceport. However, Wren planted a paint bomb, surprising IG-88, and covering him in purple paint. Leia convinced several stormtroopers to fire at the bounty hunter, and the droid was hit by a blast before retreating.
- Ralph McQuarrie's production sketches show a sleeker design than the droid that appears in The Empire Strikes Back and were later used as the model for the IG-RM Thug droids in Star Wars Rebels.
- The term "IG-88" is not the original name for the character, as the Empire Strikes Back script calls the character a "chrome war droid", and during production, it was called "Phlutdroid".
- The production puppet consisted of recycled props from A New Hope, including the Mos Eisley cantina drink dispenser as IG-88's head.
- Another assassin droid named IG-11 appeared in The Mandalorian.