TA-175 was an T-series tactical droid that fought for the Confederacy of Independent Systems during the Clone Wars. He was assigned to aid Emir Wat Tambor during the Ryloth Campaign, where he and Tambor stayed in the Twi'lek capital of Lessu.
Following several battles, Separatist leader, Count Dooku suggested that Tambor leave Ryloth before Republic and Twi'lek forces led by Jedi Master Mace Windu attacked Lessu, however, when Tambor refused to retreat in time, TA-175 decided to leave without his master and left Tambor on Ryloth to be captured by the invading Republic forces.