David Leitch Director Ryan Reynolds Wade Wilson, Deadpool Actor, Screenwriter, Producer Josh Brolin Cable Actor Morena Baccarin Vanessa Actor Julian Dennison Firefist Actor Zazie Beetz Domino Actor T.J. Miller Weasel Actor Brianna Hildebrand Negasonic Teenage Warhead Actor Jack Kesy Black Tom Actor Fred Savage Self Stefan Kapicic Colossus Voice Shiori Kutsuna Yukio Actor Karan Soni Dopinder Actor Eddie Marsan Headmaster Actor Rhett Reese Screenwriter Paul Wernick Screenwriter, Executive Producer Simon Kinberg Producer Lauren Shuler Donner Producer Stan Lee Executive Producer Jonathon Komack Martin Executive Producer Kelly McCormick Executive Producer Ethan Smith Executive Producer Aditya Sood Executive Producer Jonathan Sela Cinematographer Craig Alpert Film Editing Elísabet Ronaldsdóttir Film Editing Dirk Westervelt Film Editing Tyler Bates Original Music David Scheunemann Production Design Kurt & Bart Costume Design Marisol Roncali Casting Mary Vernieu Casting