Aut-O

Aut-O was a super tactical droid who commanded a Separatist fleet from his flagship. His fleet was infiltrated by the D-Squad, who stole the Confederacy's encryption module. He was decapitated by R2-D2.

History
Aut-O was in command of a Separatist fleet in Separatist territory. His flagship carried an encryption module that was needed to decipher a coded transmission sent out by General Grievous to his allies. Meanwhile, the D-Squad infiltrated Aut-O's command ship with a stolen Confederate shuttle, with intent to steal the module. The droid squad, led by colonel Meebur Gascon, were able to get past the battle droid security, and got to "C" Deck, where the module was being held. Aboard the dreadnought's bridge, the commanding officer -- super tactical droid Aut-O -- registers a temporary power loss on "C" deck, but the power has been reestablished and the security system has been placed on manual override. Aut-O's curiosity is piqued by this anomaly.

After multiple energy fluctuations, Aut-O decided to investigate the phenomenons himself. Taking several B1 battle droids and B2 super battle droids with him, Aut-0 made his way to "C" Deck, where he discovered D-Squad attempting to steal the encryption module. Backed by B2 super battle droids, Aut-O demands these intruders surrender and R2-D2 quickly improvises by shutting down the gravity control in the chamber. The droids begin to float about and R2 rockets away while C4 fires its laser-cutter. The blast sends C4 spinning, and its out-of-control beam takes out several battle droids in the process. QT uses her magna-coil to launch swarm mines at the enemy droids. The mines detonate, sending the super battle droids scattering.

Alone, Aut-O was struggling with stopping R2 from getting the module and trying to eliminate Colonel Meebur Gascon. Aut-O was holding tight to R2's legs while the astromech proceeded to melt Aut-O's hands with its boosters. Aut-O was then distracted by Gascon who started kicking the droid in the optical sensors. Aut-O managed to shake his head and get rid off Gascon temporarily. R2 manages to get the module while WAC-47 fought Aut-O and the little droid activated the gravity that was previously shut off. Aut-O fell, then proceeded to crush Gascon. R2-D2 witnessed this and purposely fell onto Aut-O's head, effectively decapitating the Super tactical droid. Its severed head sent out a distress signal which triggered an alarm and D-Squad managed to escape the Separatist dreadnought with the encryption module.