Bradley Cooper Rocket (voice)
Zoe Saldaña Gamora
Vin Diesel Baby Groot (voice)
Sylvester Stallone Stakar Ogord
Chris Pratt Peter Quill / Star-Lord
Dave Bautista Drax
Michelle Yeoh Aleta Ogord
Kurt Russell Ego
Karen Gillan Nebula
Ving Rhames Charlie-27
Seth Green Howard the Duck (voice)
Stan Lee Executive Producer, Characters, Watcher Informant
James Gunn Director, Writer, Script Supervisor
Jeff Goldblum En Dwi Gast / Grandmaster (uncredited)
Laura Haddock Meredith Quill
Michael Rooker Yondu
Jack Kirby Characters
Rob Zombie Unseen Ravager
Miley Cyrus Mainframe (voice) (uncredited)
Kevin Feige Producer
Michael Rosenbaum Martinex
Pom Klementieff Mantis
Elizabeth Debicki Ayesha
Don Heck Thanks
Molly C. Quinn Howard's Date
Steve Gerber Characters
David Hasselhoff The Form of David Hasselhoff
Tommy Flanagan Tullk
Gregg Henry Grandpa Quill
Larry Lieber Characters
Jim Starlin Characters
Daniel Sudick Special Effects Supervisor
Evan Jones Retch
Zack Duhame Stunts
Bill Mantlo Characters
Sean Gunn Kraglin / On-Set Rocket
Steve Agee Gef
Steve Gan Characters
Keith Giffen Characters
Ben Browder Sovereign Admiral
Steve Englehart Characters
Chris Sullivan Taserface
Rhoda Griffis Sneeper Madame
Guillermo Rodriguez Cop #2 (uncredited)
Wyatt Oleff Young Peter Quill
Victoria Alonso Executive Producer
Louis D'Esposito Executive Producer
Fred Raskin Editor
Christopher Boyes Sound Re-Recording Mixer
Roger Stern Thanks
David Acord Supervising Sound Editor, Sound Designer
Joe Bucaro III Stunts
Rex Reddick Stunts
Sarah Halley Finn Casting
Aaron Schwartz Young Ego Facial Reference
Tara Feldstein Bennett Casting
Dave Jordan Music Supervisor
Donny Carrington Kree Monk (uncredited)
Kendra Carelli Robot Courtesan
Gene Colan Thanks
Alex Klein Zylak
Judianna Makovsky Costume Design
Chase Paris Casting
John Buscema Thanks
Christopher Townsend Visual Effects Supervisor
Lora Hirschberg Sound Re-Recording Mixer
Richard Christy 'Down There!'
Terence Rosemore Narblik
Elizabeth Faith Ludlow Easik Mother
Jonathan Fawkner Visual Effects Supervisor
Nik Korda Executive Producer
Sal Buscema Thanks