Unit 1337 was an OOM droid marine who served the Confederacy of Independent Systems during the Clone Wars, but ended up surviving the deactivation of the Confederate droid armies and serving the Galactic Empire and later the Separatist Alliance. He later ended up switching bodies multiple times. His programming was transferred into a Viper probe droid body and later a Grapple droideka form when he served as a captain and later Unit Commander in the Separatist Alliance.