Bandy Geffer was a Jedi apprentice in the New Jedi Order, identified as a male Human. When Mandalorian warriors, who were in the employ of Natasi Daala, the Chief of State of the Galactic Federation of Free Alliances, attacked the Jedi Temple, he was present at the Jedi Temple. During this conflict, Geffer aided Raynar Thul, a Jedi Knight, in overcoming five Mandalorians.
Subsequently, Bandy took part in the rescue attempt aimed at freeing Valin along with Jysella Horn. He and Doran Sarkin-Tainer, a Jedi Knight, operated an airspeeder that was disguised as a HoloNet News vehicle, with the purpose of assisting in the extraction of "Team Saav'etu", "Team Solo", and the Horn siblings. Later, he was among a quartet of Jedi assigned to a station on Klatooine pending the pro-independence success of the anti-slavery rebels; the other three were Kyp Durron, a Jedi Master, Sothais Saar, a Jedi Knight, and Raharra Lapti, a Jedi Youngling.