T1-N1

T1-N1 was an astromech of the same series as T3-M4. During the Sith Civil War, he worked for Czerka Corporation on Citadel Station above Telos-4, and was in charge of the Czerka Mainframe until B-4D4 revealed to T1-N1 that causing Czerka entailed unwitting involvement in crime, contrary to T1-N1's ethical programming.

B-4D4 persuaded T1-N1 into attacking and thus distracting Czerka employees while B-4D4 downloaded incriminating files from the Mainframe. T1-N1 was fired by Czerka for unreliability, and left the Telos system with B-4D4 in an Old Republic Shuttle, destined for Nar Shaddaa.