<P> Joanie and Chachi, along with some of his cousins and a character named Bingo, form a band, which was never named in the series . </P> <P> Joanie and Chachi returned to Happy Days when Joanie Loves Chachi was cancelled, and after them being broken up for a while in the final Happy Days episode, Joanie and Chachi marry . </P> <P> After his initial appearance, the character of Chachi was expanded to a recurring character due to positive reception by fans, with Baio receiving up to 5,000 fan letters a week . When the writers began developing the character of Chachi as a musician, Baio was against the idea because he "didn't sing," but changed his mind based on the possibility of the fame associated with becoming a pop singer . His early catchphrase "Wah, wah, wah!" became popular with teenage girls . However, an attempt to spark a fashion trend by having Chachi frequently costumed with a bandana tied around his pant leg did not catch on . </P> <P> The character was named after a street where the show's creator Garry Marshall had lived . There have been false rumors that circulated claiming that the broadcast of Joanie loves Chachi had high viewership numbers in Japan and Korea because the name "Chachi" sounds like slang term for "penis" in those countries . </P>

Why does chachi wear a bandana on his leg