Special Guest Stars Emily Haines voices Singer Metric voices Band Guest Stars Caleb Yen voices Additional Voices Alan Lee voices Additional Voices Deneen Melody voices Additional Voices Dorah Fine voices Additional Voices Jackie Lastra voices Additional Voices Lily Lammers voices Additional Voices Stefan Johnson voices Announcer Lucien Dodge voices Additional Voices Abdiel Gonzalez voices Singer Julian Cihi voices Katayanagi Twins Sara Mann voices Singer Dylan Gentile voices Singer JJ Lopez voices Singer Gerald White voices Singer Kaiji Tang voices Additional Voices Anna Schubert voices Singer Suzanne Waters voices Singer Jamal M. Moore voices Singer Elyse Wills voices Singer Angie Sarkisyan voices Demon Girl #2 Angie Sarkisyan voices Demon Girl #4 Lindsay Abdou voices Singer James Hayden voices Singer Courtney Lin voices Demon Girl #3 Courtney Lin voices Demon Girl #1 Kristina Pesic voices Sandra Ingrid Haas voices Monique Kal Penn voices Lawyer Griffin Newman voices Butler Griffin Newman voices Valet Attendant Alicia Richardson voices Envy Fan #5 Alicia Richardson voices Crowd Gossip #1 Peter Bergman voices Singer K. Trevor Wilson voices Venue Bartender Michael Bacall voices Envy Fan #4 Ingrid Haas voices Crowd Gossip #2 Adam Sanders voices Envy Fan #1 Jonathan Sconza voices Envy Fan #3 Kristina Pesic voices Envy Fan #2