Sylvester Stallone Stakar Ogord
Chris Pratt Peter Quill / Star-Lord
Vin Diesel Baby Groot (voice)
Zoe Saldaña Gamora
Laura Haddock Meredith Quill
Karen Gillan Nebula
Kurt Russell Ego
Stan Lee Executive Producer, Characters, Watcher Informant
Jeff Goldblum En Dwi Gast / Grandmaster (uncredited)
Ving Rhames Charlie-27
Bradley Cooper Rocket (voice)
Dave Bautista Drax
James Gunn Director, Writer, Script Supervisor
Michael Rooker Yondu
Michelle Yeoh Aleta Ogord
Molly C. Quinn Howard's Date
Elizabeth Debicki Ayesha
David Hasselhoff The Form of David Hasselhoff
Michael Rosenbaum Martinex
Pom Klementieff Mantis
Tommy Flanagan Tullk
Seth Green Howard the Duck (voice)
Sean Gunn Kraglin / On-Set Rocket
Miley Cyrus Mainframe (voice) (uncredited)
Kevin Feige Producer
Gregg Henry Grandpa Quill
Arslan Elver Animation Supervisor
Jack Kirby Characters
Wyatt Oleff Young Peter Quill
Steve Agee Gef
Rob Zombie Unseen Ravager
Evan Jones Retch
Guillermo Rodriguez Cop #2 (uncredited)
Louis D'Esposito Executive Producer
Chris Sullivan Taserface
Christopher Flick Foley
Jim Starlin Characters
Steve Englehart Characters
Terence Rosemore Narblik
Barbara Harris ADR Voice Casting
Gene Colan Thanks
Andy Park Visual Development
Jane Oshita Stunts
Till Nowak Concept Artist
Jacob Riehle First Assistant Sound Editor
Ben Browder Sovereign Admiral
Luke Cook Zylak's Frenemy
Aaron Schwartz Young Ego Facial Reference
Guy Williams Visual Effects Supervisor
Don Heck Thanks
Tara Feldstein Bennett Casting
Sal Buscema Thanks
Sarah Halley Finn Casting
Bill Mantlo Characters
Steve Gan Characters
Tyler Bates Original Music Composer
Larry Lieber Characters
Christopher Boyes Sound Re-Recording Mixer
Rhoda Griffis Sneeper Madame
Lora Hirschberg Sound Re-Recording Mixer
Elizabeth Faith Ludlow Easik Mother
Lee Gilmore Sound Effects Editor
Nicolas Bosc Stunts
Russell Bobbitt Property Master
Keith Giffen Characters
Casey O'Neill Stunt Coordinator
Jerad Marantz Concept Artist
Chris Claremont Thanks
Donny Carrington Kree Monk (uncredited)
Joe Bucaro III Stunts
Molly Doyle Casting Associate
Stephen Blackehart Brahl