Millie Davis

Ms. O

Anna Cathcart

Olympia

Isaac Kragten

Otis

Dalila Bela

Olive

Filip Geljo

Otto

Sean Michael Kyer

Oscar

Jack McBrayer

Weird Tom

Olivia Presti

Oona

Peyton Kennedy

Dr. O

Jaiden Cannatelli

Ohlm

Michela Luci

Orchid

Christian Distefano

Owen

Seán Cullen

Mayor Macklemore

Ava Preston

Polly Graph

Ashley Botting

Delivery Debbie

Madeleine Barbeau

Oksana

Eshaan Buadwal

Olaf

Christian Corrao

The Big O

Brendan Heard

Oren

Ana Sani

Annette

DeAndray Hamilton

Coach O

Lukas Engel

Assistant to Big O

Steve Paiken

Himself

Tate Yap

O'Donahue

Patrice Goodman

Boss

Jaeden Noel

Agent Obfusco

Hannah Simone

Weird Emily