Ryan Reynolds

as Cal

Born 10/23/1976, age

John Krasinski

as Dad / Marshmallow (voice)

Born 10/20/1979, age

Fiona Shaw

as Grandmother

Born 07/10/1958, age

Steve Carell

as Blue (voice)

Born 08/16/1962, age

Phoebe Waller-Bridge

as Blossom (voice)

Born 07/14/1985, age

Louis Gossett Jr.

as Lewis (voice)

Born 05/27/1936

Died 03/29/2024, age

Alan Kim

as Benjamin

Born 04/23/2012, age

Bobby Moynihan

as Jeremy

Born 01/31/1978, age

Awkwafina

as Bubble (voice)

Born 06/02/1988, age

Emily Blunt

as Unicorn (voice)

Born 02/23/1983, age

George Clooney

as Spaceman (voice)

Born 05/06/1961, age

Bradley Cooper

as Ice (voice)

Born 01/05/1975, age

Matt Damon

as Flower (voice)

Born 10/08/1970, age

Bill Hader

as Banana (voice)

Born 06/07/1978, age

Richard Jenkins

as Art Teacher (voice)

Born 05/04/1947, age

Keegan-Michael Key

as Slime (voice)

Born 03/22/1971, age

Blake Lively

as Octopuss (voice)

Born 08/25/1987, age

Sebastian Maniscalco

as Magician Mouse (voice)

Born 07/08/1973, age

Christopher Meloni

as Cosmo (voice)

Born 04/02/1961, age

Matthew Rhys

as Ghost (voice)

Born 11/08/1974, age

Sam Rockwell

as Guardian Dog (voice)

Born 11/05/1968, age

Maya Rudolph

as Alligator (voice)

Born 07/27/1972, age

Amy Schumer

as Gummy Bear (voice)

Born 06/01/1981, age

Jon Stewart

as Robot (voice)

Born 11/28/1962, age