Narrator (voice)
Kevin Costner
Himself
Bas Rutten
Herself
Ronda Rousey
John McCarthy
Urijah Faber
Ken Kilpatrick
Self
Ariel Helwani
Muhammed Lawal
Rashad Evans
Jon Jones
Tito Ortiz
Chuck Liddell
Georges St-Pierre
Kenny Florian
Bruce Buffer
Mike Guymon
Sound Mixer
Nikola Chapelle
Researcher
Daniel Gold
Producer
Vlad Yudin
Camera Operator
Marco Vitale
Second Unit
Patrick Solomon
Production Manager
Director
Executive Producer
Jim Czarnecki
Editor
Matthew Adams
Casting
Ilan Katz
Supervising Sound Editor
Kristin Mendez
Additional Editing
Jason Hofherr
Edwin Mejia Jr.
Post Production Supervisor
Emmanuel Germond
Set Production Assistant
Brandon Scott Jensen
Director of Photography
Eliana Álvarez Martínez
Additional Photography
Vlad Horodinca
Second Unit Director of Photography
Hilarion Banks