IG-88C
this droid, the second to be activated by IG-88A, was the first to discover an Imperial spy in the Mechis system. 3D-4x had used faked holotransmissions to placate a Ranat spy, and reported the inquiry to IG-88C. IG-88C brought the matter to the attention of its three counterparts, and they decided to have IG-88B pose as a bounty hunter to draw attention away from Mechis III. IG-88C also discovered the destruction of the Arakyd Viper probe droid on Hoth, and learned that Darth Vader was personally hunting down the members of the Alliance High Command. He signalled IG-88B to be ready to intercept any Alliance ships, in hopes that the assassin droids would attract Vader's notice. When IG-88B was destroyed on Cloud City, IG-88C was dispatched - along with IG-88D - to intercept Boba Fett before he could leave Cloud City. Flying a replica of IG-2000, IG-88C missed Fett on Cloud City but activated a dormant tracer on the Slave I. The two droids laid an ambush for Fett near Tatooine, with IG-88C in position to intercept Slave I when it emerged from hyperspace. IG-88C had determined that Fett would be surprised to see it there, after IG-88B's destruction on Cloud City. This conclusion proved correct, but IG-88C underestimated Fett's reactions. Fett was able to halt his progress toward Tatooine, swing around, and fire on IG-88C's ship. Before it could respond, IG-88C realized that the ship was about to explode. He signalled IG-88D just before the ship ripped itself - and IG-88C - apart.