"Cleaver" originated as a 2JTJ personal navigation droid that was reconstructed, and then served the Galactic Republic within the "Breakout Squad" unit. The droid, initially called "Teejay," met its end during the Mission to Kynachi; however, Breaker (CT-8863), a clone who earned his moniker after identifying a KynachTech circuit board, rebuilt it using components scavenged from BX-series droid commandos, renaming him Cleaver because of his skill with a shock stick.