Frank Walker
Nix
Casey Newton
Athena
Eddie Newton
Ursula
Hugo
Frank's Dad
Young Frank Walker
Nate Newton
Dave Clark
Jenny Newton
Bus Driver
Small World Operator
Skyscraper Foreman
Young Casey Newton
History Teacher
Science Teacher
English Teacher
Beefy Cop
Jail Desk Jockey
Jail Punk
Jetpack Dexter (as Yusuf Ahmed)
Jetpack Buddy
Monorail Mother
Young Astronaut (as Priya Rajarathnam)
Astronaut's Father
Astronaut's Mother
Pickup Driver
Police Captain
Deputy
Eiffel Tower Guard #1
Eiffel Tower Guard #2
Pierre Clark
Jensen
Tough Guard
Young British Recruiter
Guitar Player
GM Plant Worker
Haitian Woman (as Liliane Leila Juma)
World's Fair Attendee (uncredited)
Nix Six (uncredited)
Bus Passenger (uncredited)
Thick Glasses (uncredited)
Justin (uncredited)
Hero Bus Patron (uncredited)
World's Fair Patron (uncredited)
Dave Clark #7 (uncredited)
Guest (uncredited)
Pedestrian (uncredited)
Gentleman - 1964 World Fair (uncredited)
Child (uncredited)
Pierre Clark (uncredited)
Self - NASA Location Operations Manager (uncredited)
Neighbor (uncredited)
DQ Patron (uncredited)
Lonely Man (uncredited)
Nix Six (Scientist Financier) (uncredited)
Alice (uncredited)
Greyhound Girl (uncredited)
World's Fair Lady (uncredited)
Dave Clark #1 (uncredited)
Economics Student (uncredited)
Donnie / Science Kid (uncredited)
Dave Clark Henchman (uncredited)
1964 World's Fair Patron (uncredited)
Harry's Girlfriend (uncredited)
Ballerina (uncredited)
1964 World's Fair Attendee (uncredited)
PewDiePie (uncredited)
Driver on the street (uncredited)
Fair Patron (uncredited)
Clarissa (uncredited)
Street Patron (uncredited)
Bystander (uncredited)
Betsy (uncredited)
Motorist (uncredited)
1964 Woman (uncredited)
Bus Stop Patron (uncredited)
Young Attendee (uncredited)
Young Casey (uncredited)
Uncle Anthony (uncredited)
Functionary (uncredited)
Dick Clark #2 (uncredited)
Mikey (uncredited)
1964 World Fair Girl (uncredited)
Woman in Car (uncredited)
Game Warden (uncredited)
Handsome Harry (uncredited)
Max / Louis (uncredited)
Pilot (uncredited)
Economics Teacher (uncredited)
Art Heist Reporter (uncredited)
Civilian (uncredited)
1964 World's Fair Boy (uncredited)