Juniper Lee
Lara Jill MillerJuniper Lee (voice)
Kath SoucieRay Ray Lee (voice)
Carlos AlazraquiMonroe (voice)
Candi MiloOphelia Ramírez (voice)
Colleen O'ShaughnesseyJody Irwin (voice), Margie (voice)
Tara StrongRoger Radcliffe (voice), Roger Radcliffe / Demon (voice), Lila (voice), Beatrice (voice), Roger Radcliffe / Melissa O'Malley (voice)
Amy HillAh Mah / Batoot / Fixit Elf #3 (voice), Ah Mah (voice)
Dee Bradley BakerGus / Tupa Beast (voice), Gus / Pilot #1 / Vortek (voice), Taylor (voice), Furry Monster / Old Man / Junior Executive (voice), Boomfist / Narrator / Comic Store Clerk (voice), Genie / Hamster / Monster (voice), Jonathan (voice), Taranok / Securitos Troll #2 / Dragon (voice), Derek / Mitch the Enchanted Rhino (voice), Gus / Announcer / Vendor (voice), Gus (voice), Boomfist / Dr. Termino / Fish Monger (voice)
Alexander PolinskyDennis Lee (voice)
S. Scott BullockLeprechaun #2 / Announcer / Attendant (voice), Wrongness / Newscaster (voice), Banticore #2 / Monotook (voice), Camel #1 (voice), Employee / Gorp / Guard (voice), Agent #2 / Roscoe (voice), Ooni / Zach / Troll (voice), Thor (voice), Monster Reporter / Customer (voice), Wrongness / Zach / Knight Possum (voice)
Phil LaMarrMant / Donnie / Old Man (voice), Senior Executive (voice), Freddy (voice), Donnie (voice), Charlie (voice), Marcus (voice)
Jeff BennettLoki / Cletus / News Announcer (voice) (as Jeff Glen Bennett), Skeeter Khomen-Getit (voice), Michael / Channel Announcer (voice), Cletus / Answering Machine / Skeeter (voice), Ring Announcer (voice), Cletus (voice)
Daran NorrisMr. Radcliffe (voice), Jean Claude (voice), Camel #2 (voice), Julian Norris (voice), Steven the Sandman (voice), Artie / Greg / Announcer (voice), Steven the Sandman / Mr. Rosskins / Race Announcer (voice)
Billy WestGeek Monster #1 / Hollis (voice), Leprechaun (voice), Terry / Pilot #2 (voice)
Rob PaulsenEuro Trash #1 / Euro Trash #3 / 10th Level Warlock (voice), Big Jock / Duke / Leonard the Goblin (voice)
Susan SiloAuntie Roon / Euro Trash #5 / Euro Trash #6 (voice)
Clancy BrownLex Luthor / Tux Monster / Geek Monster #4 (voice), Nester (voice)
Martin JarvisWilliam / King Teddy (voice), William / Bartok (voice)
Jessica WalterDemoness / Cordoth's Daughter (voice)
Pete SepenukSleazy Demon / Critic #1 / Critic #2 (voice), Roger Viking / Demon / Male Barista (voice)
Rip TaylorHorrifying Monster (voice)
Adam WylieDeputy Minion / Zombie #1 (voice)
Dan FinnertySinger (voice)
Maurice LaMarcheDimitri the Terrible / Scotty (voice)
Jane LynchMadame Rothchild (voice)
Cynthia SongéGuy / Monster Human Child #2 (voice)
James HongUncle Eddie (voice)
Gwendoline YeoCousin Lisa / Aunt Lily (voice)
Debi DerryberryChorus (voice)
Jess HarnellChorus (voice)
James SieKellington / Kai Yee (voice)
Pat MusickEloise (voice)
Scotch Ellis LoringOphelia Viking / Vendor / Mall Manager #2 (voice)