Nika Futterman Rosie (voice) Maddie Taylor Ian / Reilly / Buddy / Deni / Elliot (voice) Karley Scott Collins Gisela (voice) Ciara Bravo Gesalita (voice) Dana Snyder Alistair (voice) Cody Cameron Mr. Weenie (voice) Steve Schirripa Roberto (voice) Crispin Glover Fifi (voice) André Sogliuzzo McSquizzy (voice) Danny Mann Serge (voice) Harrison Fahn Elvis (voice) Melissa Sturm Giselle / Ursa (voice) Jeff Bennett Earl (voice) Georgia Engel Bobbie (voice) Fred Stoller Stanley (voice) Michelle Murdocca Maria (voice) Ashley Lambert Additional Voices (voice) (uncredited)