K2-B4 was T-series tactical droid who served the Confederacy of Independent Systems during the Clone Wars. K2-B4 was assigned to the command of Commander Osi Sobeck, warden of the Citadel on Lola Sayu.
During the Clone Wars, K2-B4 assisted Commander Osi Sobeck in guarding Jedi Master Even Piell, Captain Wilhuff Tarkin and their officers while they were being tortured for information on the Nexus Route. K2-B4 then scanned a supply shuttle's cargo. However, K2-B4 then informed Sobeck that the supply shuttle never arrived.
K2-B4 then informed Sobeck that Count Dooku was waiting to speak with him via hologram. K2-B4 then discovered the missing supply shuttle and had R2-D2's battle droids taken to the interrogation center.
Behind the scenesEdit
- Star Wars: The Clone Wars – "The Citadel" (First appearance)
- Star Wars: The Clone Wars – "Counterattack"
- Star Wars: The Clone Wars – "Citadel Rescue"
- (First identified as K2-B4)