Bao-Dur's remote

Bao-Dur's remote was a droid that was built by the Iridonian when he was a child, it was programed to follow Bao-Dur wherever he went. Bao-Dur upgraded it several times over the years, arming it with a laser that could both repair other droids (such as HK-47, G0-T0 and T3-M4) and damage enemies. G0-T0 developed an instant dislike of the Remote for unexplained reasons (possibly because he saw the Remote as being "inefficient" with its resources). When the Jedi Exile went to Malachor V, the Remote went in search of, and eventually found the Mass Shadow Generator, Bao-Dur's old invention from the last battle of the Mandalorian Wars, that had the power to destroy Malachor V. G0-T0, not wanting Malachor V to be destroyed, abducted the Remote. This turned out to be futile, as the planet's core exploded shortly after the Exile killed Darth Traya, destroying the planet, along with the Sith Academy, G0-T0, and the Remote.

Behind the scenes
Bao-Dur's remote's stand with G0-T0 on Malachor V was supposed to have been longer. With them being interuptted by HK-47 and the new HK-51s. Depending on the aligment of the Exile, HK would either have G0-T0 destroy himself or he would blast the remote.