I'm doing a version of the original Teen Beach Movie, not the sequel which I hate.
Mack; Roxanne Red
Brady: Mickey Dread
Mack's Grandfather: The Huntsman
Mack's Aunt: Roxie's Aunt Snow White
Layla: Amarylis Yaga
Tanner: Owen Young
Big Mama: Fairy Godmother
Various other surfers and bikers: Various other OC's.
Les Camembert: Mordred
Dr. Fusion: The troll from Snow White and Rose Red.
More cast to be added if I realize I forgot some.