Anna Cathcart
Olympia
Isaac Kragten
Otis
Millie Davis
Ms. O
Olivia Presti
Oona
Christian Distefano
Owen
Alexander Fonseca
Chuck Shmumbers
Elena Juatco
Hiccups Lady
Amy Khou
Odena
Joshua Kilimnik
Odd Todd
Parker Lauzon
Trumpet Agent
Tristan Ly
Osmand
Tony Sciara
Gino Confalone
Chris River
Dramatic Kid Announcer (as Christopher River)
Tate Yap
O'Donahue
