BO-N1, a service droid, provided assistance at the droid spa located on Coruscant throughout the Clone Wars era.
The voice of BO-N1 was provided by Angelique Perrin, who also lent her voice to another spa droid, SN-D1, in "Evil Plans," the eighth episode from the third season of Star Wars: The Clone Wars. Although the character's name isn't spoken within the episode, BO-N1 is identified by name in the closing credits.