Unidentified B1 battle droid (Asajj Ventress)

A B1 battle droid was used by the Confederacy of Independent Systems as Asajj Ventress's bodyguard in her voyage to Coruscant.

History
Ventress had been sent to Coruscant to take probably an attack on the Galactic Senete, where representatives of Bureaucratosis give a speech (which in reality were only grunts and verse), to accompany the sadistic Sith apprentice was a Separatist droid that could to feel emotions (so much so that could laugh).

Grand Master Yoda sensed danger, and found Ventress, then dueled with lightsabers, while escaping a class of Jedi from the Senate Building with an "infiltrator", Yoda and Cody, a commander of the Republic, imprisoned Asajj, but the droid escaped with some secret plans of battle.

Later, Commander Cody, the Grand Master Yoda and a young Han Solo (posing as "Ian") found and destroys the droid and plans on Hoth, in the guts of a Tauntaun, while on Coruscant the two fleets of the galaxy battling.

Appareances

 * LEGO Star Wars: The Padawan Menace