Britt Robertson

Casey Newton

George Clooney

Frank Walker

Raffey Cassidy

Athena

Hugh Laurie

David Nix

Tim McGraw

Eddie Newton

Chris Bauer

Frank's Dad

Shiloh Nelson

Young Casey Newton

Kathryn Hahn

Ursula

Keegan-Michael Key

Hugo

Thomas Robinson

Young Frank Walker

Pierce Gagnon

Nate Newton

Matthew MacCaull

Dave Clark

Judy Greer

Jenny Newton

Matthew Kevin Anderson

Bus Driver

Michael Giacchino

Small World Operator

D. Harlan Cutshall

Skyscraper Foreman

Xantha Radley

History Teacher

David Nykl

Science Teacher

Paul McGillion

English Teacher

Pearce Visser

Beefy Cop

Garry Chalk

Jail Desk Jockey

Dagan Nish

Jail Punk

Yusuf A. Ahmed

Jetpack Dexter

Alex Barima

Jetpack Buddy

Jedidiah Goodacre

Jetpack Buddy

Kate Crutchlow

Monorail Mother

Priya Rajaratnam

Young Astronaut

Parm Soor

Astronaut's Father

Leena Manro

Astronaut's Mother

Rick Pearce

Pickup Driver

Tom Butler

Police Captain

Michael Rowe

Deputy

Tim Perez

Deputy

Patrick Sabongui

Eiffel Tower Guard #1

Romuald Hivert

Eiffel Tower Guard #2

Mathieu Lardier

Pierre Clark

Fraser Corbett

Jensen

Darren Shahlavi

Tough Guard

Aidan Gemme

Young British Recruiter

Takayuki Oki

Guitar Player

Natasha Davidson

GM Plant Worker

Liliane Leilan Juma

Haitian Woman

Paul Anthony

Thick Glasses (uncredited)

Kenia Arias

DQ Patron (uncredited)

Kimberly Arklie

Hero Bus Patron (uncredited)

Nicholas Barrera

World's Fair Patron (uncredited)

Barbara Keegan

World's Fair Patron (uncredited)

Jason Bell

Dave Clark #7 (uncredited)

Wendy Bell

Guest (uncredited)

Aimee Bowen

Pedestrian (uncredited)

Chrystall Friedemann

World's Fair Lady (uncredited)

PewDiePie

PewDiePie (uncredited)

Darien Provost

Mikey (uncredited)

Jackson Tessmer

1964 World's Fair Boy (uncredited)

Marcus Rosner

Handsome Harry (uncredited)

Julie Johnson

Harry's Girlfriend (uncredited)

Marshall Archibald

Justin (uncredited)

Clint Carleton

Pierre Clark (uncredited)

Luis Castilleja

Gentleman - 1964 World Fair (uncredited)

Ellen Marguerite Cullivan

Neighbor (uncredited)

Leslie Danielsen

DQ Patron (uncredited)

Michael Ray Davis

Lonely Man (uncredited)

Peter Dwerryhouse

Nix Six (Scientist Financier) (uncredited)

Lindsey Elizabeth

Alice (uncredited)

Amy Esterle

Greyhound Girl (uncredited)

Monique Ganderton

Dave Clark #1 (uncredited)

Glen Gordon

Donnie / Science Kid (uncredited)

Kory Grim

Dave Clark Henchman (uncredited)

Robert Peoples

Pedestrian (uncredited)

Anthony J. James

DQ Patron (uncredited)

Tomas Johansson

1964 World's Fair Patron (uncredited)

Kenneth Kantymir

Nix Six (uncredited)

Andrew Kerr

1964 World's Fair Attendee (uncredited)

Joshua Lagos

Neighbor (uncredited)

Tommy Lentsch

Driver (uncredited)

Laura MacKillop

Betsy (uncredited)

Grae Marino

Motorist (uncredited)

Catherine Michaud

Young Attendee (uncredited)

Jaeda Lily Miller

Young Casey (uncredited)

Lochlyn Munro

Uncle Anthony (uncredited)

Aliyah O'Brien

Functionary (uncredited)

Eddie Perez

Dave Clark #2 (uncredited)

Marc Primiani

World's Fair Patron (uncredited)

Kinley Rice

1964 World Fair Girl (uncredited)

Kelly Riese

Woman in Car (uncredited)

Robin T. Rose

Game Warden (uncredited)

Bruce Salomon

Max / Louis (uncredited)

Ranjit Samra

Pilot (uncredited)

Manoj Sood

Economics Teacher (uncredited)