Dan'yelle Williamson (Diva Donna/Mary Gaines), Alex Hairston (Disco Donna), Olivia Elease Hardy (Duckling Donna/Mimi), John Gardiner (Neil Bogart/Sommelier/Gunther), Erick Pinnick (Andrew Gaines/Doctor), Steven Grant Douglas (Bruce Sudano), Kyli Rae (Giorgio Moroder), Cameron Anika Hill (Young Dara/Amanda), Jay Garcia (Brian/Helmuth Sommer), Jennifer Byrne (Pete Bellotte/Don Engel)