Belleregard

From Muppet Wiki

Belleregard is Beauregard's mop, featured in the live stage show The Muppet Show On Tour. She was featured dancing with Beau in the "Cheek to Cheek" number.

No cast listing for her voice is listed, and it is believed she did not speak. The program for the tour also lists her appearance as being on video and not live on stage.