- Sam Ashe Arnold - Keith Sarling
- Diya Kittur - Amy Kaye
- Berkley Silverman - Millie Stubbs
- Rhys Gannon - Stu
- Margaret Jackman - Mrs. Franny McMurtle
- Phil Corbitt - Mr. Fitzgerald
- Andrew Readman - Mr. Herabius
- Marcus Taylor - Bill Goat
- Darlene Cooke - Aunt Abigail
- Jordan Poole - Greg Willoughby
- Jake Sim - Kelsey McGrady
- Rosina Carbone - Auntie Jean
- Jason Done - Andrew
- Jaiden Cannatelli - The Curious
- Amelia Curtis - Thomas' Mum
- Imogen Tear - Alexa
- Sydney Wade - Jessie
- Jennifer James - Jessie's Mum
- Daniel Ryan - Jessie's Dad
- Stephanie Dooley - Mrs. Peterson
- Noah Valentine - The Bottler
- Simon Naylor - Mr. Sanford
- Rebecca Hanssen - Pearl
- Chris Jack - Darrell
- Zita Sattar - Hannah
- Acushla-Tara Kupe - Pui
- Tillie Amartey - Arlene
- Isabella Pinto - Dent
- Elizabeth Bower - Paxton
- Romy Weltman - Esme Curtis
- Justin Paul Kelly - Ashley / Kindlesticks
- Robin Archer - Mr. Thorne
- Beatriz Yuste - Mrs. Thorne
- Aria Anthony - Sissy Tuthill
- Thamela Mpumlwana - Dave Stevens
- Leah Choudhry - Jodie
- Daniel Ogbeide-John - Brandon
- Rachel Leskovac - June
- Andonis Anthony - The Traveller
- Russell Richardson - Old Baz
- Tomaso Sanelli - Jack Whitaker
- Katie Douglas - Indigo
- Keana Bastidas - Gudge
- Julian Richings - Zephaniah
- Tyler Lionel Parr - Ace's Dad
- Ethan Pugiotto - Aiden Whitaker
- Nicolas Grimes - Kid Herc
- Lilly Bartlam - Cat Daughter
- Kyle Breitkopf - Ace
- Maia Jae Bastidas - Puck
- Jenny Young - Ace's Mom
- Simon D. Scott - Shoe Man
- Peter Loung - Palooka
- Alexandra Castillo - Claire Whitaker
- Jaeden Noel - Carlos Vasquez
- Leonidas Castrounis - Rich
- Paloma Nuñez - Teacher
- Anthony Christian Potenza - Bob
- Corteon Moore - Older Carlos
- William Romain - The Curious
- William Romain - The Curious / Stan
- Shawn Campbell - Majestic Game (voice)
- Devan Cohen - The Paladin
- Oliver Finnegan - Gabe
- Bo Bragason - Rocky
- Scarlett Alice Johnson - Leader
- Alexander Kirk - Dad
- Quincy Kirkwood - Molly Dekker
- Jakob Davies - Crispin Dekker
- Pip Dwyer - Mrs. Dekker
- Jim Annan - Mr. Dekker
- Michelle McLeod - Debby
- Kaniehtiio Horn - Ava (Voice)
- Katharine Ingle - Mum
- Andrew Steele - Dad
- Hannah Saxby - Nita
- Minti Gorne - Max
- Paul Moriarty - The Boiler Man
- Brielle Robillard - Jude
- Olivia Presti - Willow
- Yatharth Bhatt - Stan
- Morgan Kohan - Faye
- Claire Qute - Mayel
- Tony Nappo - VP Hawkins
- Claire Rankin - Tina
- Imogen Faires - Kiera
- Shanice Archer - Marcy
- Doña Croll - Glams
- Seun Shote - Dad
- Jacob Chambers - Sammy
- Richard Brake - The Hidden
- Shechinah Mpumlwana - Mia Tuthill
- Raven Dauda - Rosemary Tuthill
- Martin Roach - Julian Tuthill
- D'Pharaoh Woon-A-Tai - Lucky
- Helene Robbie - The Mouth / Rep on Phone
- Helene Robbie - Mouth
- Cameron Roberts - Lincoln
- Patrick Gallagher - Coach Carter
- Paulino Nunes - Bruce
- Colton Clause - George
- Lola Mae Loughran - Cass
- Ella Dunlop - Alice
- Jola Olajide - Claudia
- Kevin Sutton - Dad
- Tommy French - Elf Deagle
- Dominique Moore - Mrs. Connor
- Wendy Wason - Mrs. Reese
- Pavel Douglas - Splinta Claws (Voice)
- Brennan Clost - Older Aiden
- John Ammirati - Parent
- John Ammirati - Parent (uncredited)
- Gemma Lawman - Bottler's Mum (uncredited)
- Graham Burton - Recital Parent (uncredited)
- Nenaa-Jo Uraih - School Secretary (uncredited)
- Andrew Moodie - Mr. Moss
- Devin Upham - Fire Eater (uncredited)
- Lukas Engel - The Curious
- Katie Proctor - Kelly
- Steve Hughes
- Bruce McDonald
- Robert Butler
- Anne Loi
- Juliet Charlesworth
- Josh Scherba
- Bede Blake
Julian Richings hace el papel de Zephaniah.
Richard Brake hace el papel de The Hidden.
Aurora Aksnes interpreta a Narrator (voice) en la serie.
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