Eva Noblezada Sam Greenfield (voice) Simon Pegg Bob (voice) Jane Fonda Dragon (voice) Whoopi Goldberg Captain (voice) Flula Borg Jeff the Unicorn (voice) Lil Rel Howery Marvin (voice) Colin O'Donoghue Jerry (voice) John Ratzenberger Rootie (voice) Adelynn Spoon Hazel (voice) Grey DeLisle Mrs. Rivera / Saorise / Penny Depot Boss (voice) Suzy Nakamura Social Worker (voice) Kari Wahlgren Hazel's Mom / Aine (voice) Kwaku Fortune Gael (voice) Chris Edgerly Typing Bunny (voice) Nick Thurston Hazel's Dad / Nosy Cat (voice) Fred Tatasciore Quinn / Fred (voice)