Brendan Fraser

Charlie

Sadie Sink

Ellie

Ty Simpkins

Thomas

Hong Chau

Liz

Samantha Morton

Mary

Sathya Sridharan

Dan the Pizza Man

Jacey Sink

Young Ellie

Allison Altman

Young Mary (uncredited)

Lance Oppenheim

Julian (uncredited)

Grace Perkins

Maddie (uncredited)

Wilhelm Schalaudek

Liam (uncredited)