Lance Henriksen as Willis (75 Yrs)

Viggo Mortensen as John (50 Yrs)

Terry Chen as Eric

Sverrir Gudnason as Willis (23 - 43 Yrs)

Hannah Gross as Gwen

Laura Linney as Sarah (45 Yrs)

Carina Battrick as Sarah (4 - 6 Yrs)

Ava Kozelj as Sarah (11 Yrs)

Gabby Velis as Monica

Bracken Burns as Jill

Liam Crescitelli as John (Baby)

Luca Crescitelli as John (Baby)

Grady McKenzie as John (4 Yrs)

Etienne Kellici as John (9 - 11 Yrs)

William Healy as John (16 Yrs)

Ella Jonas Farlinger as Paula

Piers Bijvoet as Will

David Cronenberg as Dr. Klausner

Paul Gross as Dr. Solvei

Henry Mortensen as Sergeant Saunders

Noah Davis as Diner Waiter Rasmussen

Taylor Belle Puterman as Gracie

Bo Martynowska as Flight Attendant Harris

Maxwell McCabe-Lokos as Eddie

Johnny O. as Danny Ward