Will Smith as Henry Brogen / Junior

Mary Elizabeth Winstead as Danny Zakarweski

Clive Owen as Clay Verris

Benedict Wong as Baron

Douglas Hodge as Jack Willis

Ralph Brown as Del Patterson

Linda Emond as Janet Lassiter

Ilia Volok as Yuri Kovacs

E.J. Bonilla as Marino

Victor Hugo as Junior (On-Set Reference)

David Shae as Bicycle Messenger

Theodora Miranne as Kitty (Jack's Girlfriend)

Diego Adonye as Henry's Dad

Lilla Banak as Henry's Mom

Igor Szasz as Valery Dormov

Alexa GyÖrgy as Young Girl on Train

Fernanda Dorogi as Mother on Train

Alexandra Szucs as Aniko (Lab Technician)

Tim Connolly as Key Shack Agent

Daniel Salyers as Patterson's Son

Jordan Sherley as High School Girl

Tony J. Scott as High School Principal

Jeff J.J. Authors as Man at Marina

Justin James Boykin as Connor (uncredited)

Karis Wymbs as School Kid

Frankie Verroca as Budapestian at Sauna

Balázs Veres as Hungarian Student

Adrian Valle Torres as Junior's Friend

Ashton Tatum as Cop

Ferenc Iván Szabó as Training Officer

Dillon John Swanson as College Student

Saskia Slaaf as Flemish Train Announcer

Kenny Sheard as Scuba Killer #1

Carl Salonen as Budapest Bathhouse Patron

Brianna Robinson as College Student

Hannah Pniewski as Barista #1

Thanh-Huy Phan as Tourist

Zach Mellado as College Kid

Samantha Kudler as College Student

Frankie Justin as College Student

Douglas Rizzo Johnson as Student

Dawit Gulilat as Pedestrian

Samantha Goldman as College Student

Chris Goad as DIA Agent

Björn Freiberg as Training Officer

Christopher T. Elliott as John

Marc Demeter as Agent Demeter

William Caraballo as College student

Olivia Bailey as Coffee House Hipster

Daniel Annone as Barista #2

Christon Andell as College Student