TZ-33 was placed in charge of a Separatist outpost on the planet Felucia. In preparation for a Republic attack, TZ-33's forces received reinforcements from General Grievous.
Detecting Republic AT-TEs around his outpost, TZ-33 organized his troops to defend against the Clone Army. After sending his troops out to attack, TZ-33's outpost was attacked from three sides by Clone Trooper forces led by Anakin Skywalker, Plo Koon and Ahsoka Tano respectively. After the forces guarding him were destroyed, TZ-33 was bisected in half by Anakin Skywalker with his lightsaber.