“I think, therefore I am. I destroy, therefore I endure.”
IG-88’s final thoughts

IG-88 was an assassin droid line designed by Holowan Laboratories. The IG-88 line was a derivative of the IG-100 MagnaGuard droids used as bodyguards by General Grievous and the IG Lancer Droids used by Durge during the Clone Wars. IG-88 later became one of the galaxy’s most infamous bounty hunters. However, the bounty hunting was just a cover for the droid’s grand plan—the Droid Revolution.

There were only four made, all identical. Moments after activation, the original massacred the scientists and transferred his consciousness into the other three. They then escaped the lab. It is possible it was the droid’s incompletely formed identity that made him obsessed with hunting and killing.

“WANTED : IG-88, aka the Phlutdroid, also reportedly operating as IG-88A, IG-88B, IG-88C, or IG-88D. Heavily armed, more than 150 kills. DISMANTLE ON SIGHT.”
Imperial bounty posting

The droid revolution

From their base on Mechis III, the four IG-88s began planning their “Droid Revolution“, a movement in which an army of all types of droids would rise up and annihilate all the biological scum of the universe. After taking control of Mechis III, they began uploading their advanced sentience program into all droids manufactured there; the sentience programming was to be loaded into the droids when the appropriate code was sent by the IG-88s. When this occurred, all of the droids would rise up and destroy all biological life in the galaxy.

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“They shall be obliterated.”
IG-88