Battle droid 513 was kept by the Mandalorian Death Watch for target practice. This particular droid was created from the cobbled remains of a Retail Caucus LR-57 combat droid, a standard battle droid, and a LM-432 crab droid, with a deep Vocabulator.
He was present on Carlac when Jedi Padawan Ahsoka Tano, Lux Bonteri and R2-D2 arrived. Being too slow to avoid the blaster fire, he was damaged by the Death Watch. When they sent R2-D2 to repair them, he and the other droids implored him to reassemble them. While the Death Watch went to the Ming Po town and engaged Tano, R2-D2 successfully repaired the droid. When R2-D2 observed Tano captured by the Death Watch he asked the droids, including battle droid 513 to help him rescue her. R2-D2 managed to distract the Death Watch and passed Tano her lightsabers. As she dueled Pre Vizsla, the leader of Death Watch, the fight, as well as the warriors shifted outside. There, with Bonteri, R2-D2, and the other droids, battle droid 513 engaged the warriors. Eventually he was shot by a Death Watch warrior and fell over.
- (First identified as Battle droid 513)