Herman Monster is an original puppet created for the Jim Henson Company's Puppet Up! - Uncensored stage show. The grey monster was designed by Julianne Buescher, and built by Sean Johnson under the guidance of Jane Gootnick.
He made his on stage debut at The Improv in Hollywood during the troupe's June 2006 performances.
Herman is made from the same fur as Sprocket the Dog from Fraggle Rock and Grover from Sesame Street.