Brool is one of the Minstrels who followed Cantus on Fraggle Rock. He plays a stringed instrument and debuted with his fellow musicians in the episode "The Minstrels."
In the song "Music Makes Us Real (Ping!)," he states that before becoming a Minstrel, "all [he] heard was battle sounds."
The puppet was later repurposed for use as a background character in several Muppet productions, including The Muppet Christmas Carol (performed by Louise Gold), Muppet Treasure Island, and Muppets Tonight. He further appears on the cover of the book Kermit Learns How Computers Work.
