Guest Stars Carl Faruolo voices Gebbrey Dee Bradley Baker voices Muskoxtaur Fred Armisen voices Message Bird Grey DeLisle Griffin voices Bayden Dee Bradley Baker voices Bird Dee Bradley Baker voices Deer Grey DeLisle Griffin voices Hanglydangly Grey DeLisle Griffin voices Message Bird Grey DeLisle Griffin voices Old Man Fred Armisen voices Teacher Birdtaur Colleen Ballinger voices Message Bird Carl Faruolo voices Message Bird Co Starring Jasper Randall voices Background Vocal Contractor Fletcher Sheridan voices Background Singers Allie Feder voices Background Singers Baraka May Williams voices Background Singers Randy Crenshaw voices Background Singers Toby Chu voices Background Singers