Unidentified MSE-6 droid (The Citadel)

This MSE-6-series mouse droid was stationed on the Separatist planet Lola Sayu in the Citadel detention facility around the year 21 BBY during the Battle of Lola Sayu.

Biography
When the team of Jedi and Clone troopers sent to rescue the prisoner of the Citadel, Jedi master Even Piell, was captured by warden Osi Sobeck, this MSE-6-series mouse droid was tasked with leading the prisoners and their B1 security battle droid guards thorugh the corridors of the Citadel and to the interrogation level. However, they were stopped by R2-D2's battle droid squadron, who pretended to be Confederate droids and asked the security battle droids to hand over the prisoners to them.