T3-M4

T3-M4 is a fictional character from the 2003 video game Star Wars: Knights of the Old Republic and the 2004 sequel Star Wars: Knights of the Old Republic II: The Sith Lords. T3-M4 is an astromech droid primarily used in the game for computer and security-related skills.

Bio
T3-M4 was constructed by Janice Nall of Taris for the local crime lord Davik Kang. The droid featured exceptional code-breaking and computer slicing skills in addition to being able to mount armour and weapon upgrades. T3-M4's original purpose was to aid Canderous Ordo in breaking into a Sith Base on Taris for Davik Kang. Revan, under the advice of Canderous Ordo, assists in stealing the launch codes from the base and the motley group manage to escape the planet without being vaporized by the Sith blockade forces.

T3-M4 resurfaced five years after the end of the so-called Jedi Civil War. When the Ebon Hawk returned to known space with T3-M4, the Jedi Exile, and a former Jedi/Sith by the name of Kreia onboard. It is heavily hinted that T3-M4 was sent by Revan. T3-M4 alone could access the navigation records of the Ebon Hawk, which would reveal where in the unknown regions Revan went. Kreia later mentions that T3-M4's "final mission" is to take the exile into the unknown regions to find Revan. The exile and T3-M4 left known space, and it is unknown what happened to them.