Vin Diesel Baby Groot (voice)
Sylvester Stallone Stakar Ogord
Jeff Goldblum En Dwi Gast / Grandmaster (uncredited)
Chris Pratt Peter Quill / Star-Lord
Karen Gillan Nebula
Zoe Saldaña Gamora
David Hasselhoff The Form of David Hasselhoff
Kurt Russell Ego
Michelle Yeoh Aleta Ogord
Miley Cyrus Mainframe (voice) (uncredited)
Pom Klementieff Mantis
Ving Rhames Charlie-27
James Gunn Writer, Script Supervisor, Director
Michael Rooker Yondu
Steve Constancio Ager/Dyer
Sarah Halley Finn Casting
Larry Rippenkroeger Stunt Double
Seth Green Howard the Duck (voice)
Harry E. Otto Art Direction
Dave Bautista Drax
Bradley Cooper Rocket (voice)
Laura Haddock Meredith Quill
Stan Lee Watcher Informant, Characters, Executive Producer
Wyatt Oleff Young Peter Quill
Boni Yanagisawa Stunt Double
Molly C. Quinn Howard's Date
Guillermo Rodriguez Cop #2 (uncredited)
Zack Duhame Stunts
Kevin Feige Producer
Elizabeth Debicki Ayesha
Tommy Flanagan Tullk
Steve Upton Utility Stunts
Alex Klein Zylak
Ben Browder Sovereign Admiral
Michael Rosenbaum Martinex
Nea Dune Lovebot (uncredited)
Louis D'Esposito Executive Producer
Jack Kirby Characters
Mike Escamilla Scrote (uncredited)
Sean Gunn Kraglin / On-Set Rocket
Evan Jones Retch
Casey O'Neill Stunt Coordinator
David Castillo Stunts
Jules Holdren Key Hair Stylist
Jason Williams Huge Guard of the Sovereign Nation (uncredited)
Steve Agee Gef
Sara Cobbeldick Set Costumer
Fred Galle Sovereign Leader (uncredited)
Rex Reddick Stunts
Ron Newburn Gaffer
Gregg Henry Grandpa Quill
Iain McFadyen Art Direction
Mac Wells Officer Fitzgibbon
Kathryn Himoff Additional Editing
Christine Youngstrom Art Department Coordinator
Scott Chambliss Production Design
Don Heck Thanks
Victoria Alonso Executive Producer
Dylan Goss Aerial Director of Photography
Alphonso A'Qen-Aten Jackson Ravager (uncredited)
Joe Bucaro III Stunts
Chris Sullivan Taserface
Lee-Anne Telford Stunt Double
Kyler Dennis Second Assistant Camera
Larry Lieber Characters
Rob Zombie Unseen Ravager
Barbara Harris ADR Voice Casting
Lars P. Winther Co-Producer, First Assistant Director
Russell Bobbitt Property Master
Daniel Sudick Special Effects Supervisor
Dave Jordan Music Supervisor
Daniel Macarin Visual Effects Supervisor