Peyton List as Lydia Domek

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Dove Cameron as Mackenzie Hartley

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Lucas Tills as Brendan Hartley

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Bryana Salaz as Morgan Garcia

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Sabrina Carpenter as Carrie Fairlie

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Maeve Tomalty as Zoey Montague

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Kira Kosarin as Adrianna Stevenson

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Cameron Boyce as Carter Williams

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Emily Osment as Bridgette Fairlie

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Zachary Gordon as Noah Sterecra

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Matt Shively as Owen Collins

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Ricardo Hurtado as Alejandro Burromuerto

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Nathan Kress as Nicholas Sterecra

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Selena Gomez as Ashley Sterecra

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Dianne Doan as Emma Shaunessy

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Claire Engler as Katrina "Kitty" Shaunessy

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Kenzie & Brendan's Family:
Mark Pellegrino as Brian Hartley

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Meredith Monroe as Melanie Hartley

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Bailey (Kenzie's service dog)

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Audrey (Brendan's dog)