Guest Stars Dave Goelz voices Uncle Travelling Matt Kevin Clash as Uncle Travelling Matt Dan Garza voices Junior Gorg Ben Durocher as Junior Gorg Frank Meschkuleit voices Pa Gorg Andy Heyward as Pa Gorg Aymee Garcia voices Ma Gorg Ingrid Hansen as Ma Gorg John Tartaglia voices Sprocket Donna Kimball voices Cotterpin Kanja Chen voices Pogey Dave Goelz voices World's Oldest Fraggle Frank Meschkuleit as World's Oldest Fraggle John Tartaglia voices Architect Karen Prell voices Icy Joe Donna Kimball voices Storyteller John Tartaglia voices Barry Blueberry Kanja Chen voices Grizzard Frank Meschkuleit voices Gluey Rudey Frank Meschkuleit voices Mantivore Aymee Garcia voices Brool Kira Hall voices Brio Ali J. Eisner voices Balsam Jordan Lockhart voices Murray Ingrid Hansen voices Little Rago Dan Garza voices Mezzo's Band Ali J. Eisner voices Coop Kanja Chen voices Mezzo's Band Karen Prell voices Mezzo's Band Co Starring Harvey Mason Jr. voices Background Singers Andrew Hey voices Background Singers Sam Ramirez voices Background Singers Ana Krafchick voices Background Singers Binney Montgomery voices Background Singers