Gar, a male human, assisted Jedi Chief Librarian Jocasta Nu in her mission to safeguard the remnants of the Jedi Order following Order 66 and the subsequent Great Jedi Purge, operating from Nu's new school. Following Nu's death on Coruscant after mission there, Gar diligently protected the cave for numerous years until, no longer capable, he detonated an explosive, sacrificing himself to seal the vault. Many years afterward, Luke Skywalker unearthed Nu's sanctuary, which held archives and holocrons.
Gar was characterized by a beard and glasses.
The initial appearance of Gar was in the 2017 canon comic book, Darth Vader (2017) 7, with the writing attributed to Charles Soule and the illustrations by Giuseppe Camuncoli.