If

Christopher Meloni

Leo Durocher

Matt Damon

Private Ryan

Emily Blunt

Mary Poppins

George Clooney

Ace

Keegan-Michael Key

Various Characters

Steve Carell

Frank Ginsberg

Ryan Reynolds

Nolan Booth

Richard Jenkins

Psychiatrist (uncredited)

Bradley Cooper

Jor-El

Bobby Moynihan

Chet (voice)

Fiona Shaw

Petunia Dursley

Matthew Rhys

Count Dzerzhinsky

Sam Rockwell

Wolf (voice)

Bill Hader

Officer Slater

José Garcia

Etienne Forcier

John Krasinski

Frank McCay (voice)

Maya Rudolph

Aunt Cass (voice)

Craig 'Radioman' Castaldo

Man on Train

Blake Lively

Serena van der Woodsen

Liza Colón-Zayas

Bettina 'Tina' Marrero

Louis Gossett Jr.

Willie

Jon Stewart

Self

Marina Foïs

(voice) (uncredited)

Amy Schumer

Lainy Newton

Phoebe Waller-Bridge

Blossom (voice)

Awkwafina

Tarantula (voice)

Sebastian Maniscalco

Magician Mouse (voice)

Ed Herbstman

Deli Guy

Mylène Farmer

(voice) (uncredited)

Allyson Seeger

Viola (voice)

Shauna Pinkett

Hospital Receptionist

Barbara Andres

Woman Upstairs

Cailey Fleming

Bea

Clément Remiens

(voice) (uncredited)

Alan Kim

Benjamin

Catharine Daddario

Bea’s Mom

Laquet Sharnell Pringle

Receptionist

Sa'Raya Paris Johnson

7 Year-Old Girl