The Underground Entertainer is a busker who roams around the Underground playing music for the entertainment of the passengers and the trains.
The Underground Entertainer loves to make people happy, and is happy to teach music and lyrics to passengers and trains. He once stood in as a decoy for Sam 7 in order to lead fans away from the hotel, and has remained good friends with him ever since.
He wears jeans and a denim coat with green lapels over a pink shirt with purple stripes. His shoes are brown.
- He is modelled after Miles Hunt, the composer for the show. Miles was originally supposed to supply his voice but laws against non-Equity members prevented him from doing so.