Bradley Cooper Rocket (voice)
Zoe Saldaña Gamora
Vin Diesel Groot (voice)
Sylvester Stallone Stakar Ogord
Nathan Fillion Master Karja
Chris Pratt Peter Quill / Star-Lord
Dave Bautista Drax
Linda Cardellini Lylla
Will Poulter Adam Warlock
Karen Gillan Nebula
Tara Strong Mainframe (voice)
Maria Bakalova Cosmo (voice)
Stan Lee Characters
Seth Green Howard the Duck (voice)
James Gunn Writer, Lamb-Shank (voice), Director
Judy Greer War Pig (voice)
Kevin Feige Producer
Michael Rooker Yondu
Jack Kirby Characters
Michael Rosenbaum Martinex
Miriam Shor Recorder Vim
Dee Bradley Baker Blurp (voice)
Elizabeth Debicki Ayesha
Pom Klementieff Mantis
Pete Davidson Phlektik
Molly C. Quinn Molly Ravager
Gregg Henry Grandpa Quill
Mikaela Hoover Floor
Daniel Bernhardt Stunts
Jennifer Holland Administrator Kwol
Don Heck Characters
Jim Starlin Characters
Larry Lieber Characters
Daniela Melchior Ura
Bill Mantlo Characters
Steve Gan Characters
Sean Gunn Kraglin / Young Rocket (voice)
Christopher Fairbank Broker
Gary Rizzo Sound Re-Recording Mixer
Louis D'Esposito Executive Producer
Steve Englehart Characters
Bobcat Goldthwait Thanks
Mike Mignola Thanks
Keith Giffen Characters
Victoria Alonso Executive Producer
Chukwudi Iwuji The High Evolutionary
Lloyd Kaufman Gridlemop (voice)
Clare Grant Crying Krylorian Citizen
Roger Stern Characters
Aurélia Agel Stunt Double
Doc Kane ADR Mixer
Roy Thomas Thanks
Fred Raskin Editor
Karen Abercrombie Grandma Quill
Stephane Ceretti Visual Effects Supervisor
Hank Amos Stunts
Sarah Halley Finn Casting
Tiffany Smith Orgocorp Host Friniki
Christopher Boyes Sound Re-Recording Mixer
Beth Mickle Production Design
Alicia Vela-Bailey Stunt Double
Asim Chaudhry Teefs
Dane DiLiegro Unsavory Octopus
Benjamin Byron Davis Bletelsnort
Randy Havens Till
David Acord Supervising Sound Editor, Sound Designer
Natalia Safran Controller
Heidi Moneymaker Stunt Coordinator
Nico Santos Recorder Theel
Judianna Makovsky Costume Design
Vincent Papaix Visual Effects Supervisor
Dave Jordan Music Supervisor