R5-M1 was a slow-moving and noisy astromech droid that was employed by Fiz Cor'gril as a starship mechanic. The unit had the annoying habit of beeping and chirping to itself, while its malfunctioning acoustic signaler sometimes raised the sound level to unbearable levels. Garginoolaara, a Verpine, worked with the droid to keep its personality from going foul, however he was unable to repair some of the droid's other problems.