Helen Henny is a vocalist (formerly tambourine player) and bassist of Munch's Make Believe Band at Chuck E. Cheese's. Although not officially a musician in stage setups, Helen is commonly seen playing either bass or tambourine in most showtapes and artwork. She typically wears a green and black-and-purple cheerleading dress. Helen replaced both Mitzi Mozzarella from ShowBiz Pizza Place, and Harmony Howlette from Pizza Time Theatre. She is still a present member of the band.


When Helen first debuted in 1978, she was a parody of Australian folk singer Helen Reddy, as a guest for the portrait stage. She later reappeared in 1983, completely redesigned as an old Broadway hen, known as Broadway Helen, as a guest for the Balcony Stage in 1984. Broadway Helen has also appeared on the C-Stage, Rocker Stage, and The Shelf. When Showbiz Pizza merged with Pizza Time Theatre in 1984, Helen became the permanent female member.

In 1989, Helen became "Mitzified" to become more appealing to young girls for Concept Unification. She appeared on more merchandise than any character other than Chuck E. Cheese. Her black and white feather-hair now became pigtails, her wrinkled features became softened and she stopped clucking. Helen's ongoing relationship with Chuck began to blossom on and off the stage, becoming a classic running gag among fans. Around 1995, Helen's personality was adjusted a bit by giving her a cheerleader's outfit, a costume that would be used in most locations later on. In 2012, when Rockstar Chuck debuted, Helen Henny also received her new Rockstar look along with the rest of Chuck's friends. Her personality was also further tweaked, making her an avid fan of arcade games.