Vin Diesel Groot (voice)
Sylvester Stallone Stakar Ogord
Chris Pratt Peter Quill / Star-Lord
Bradley Cooper Rocket (voice)
Nathan Fillion Master Karja
Zoe Saldaña Gamora
Will Poulter Adam Warlock
James Gunn Writer, Lamb-Shank (voice), Director
Linda Cardellini Lylla
Dave Bautista Drax
Karen Gillan Nebula
Tara Strong Mainframe (voice)
Judy Greer War Pig (voice)
Michael Rooker Yondu
Stan Lee Characters
Kevin Feige Producer
Molly C. Quinn Molly Ravager
Seth Green Howard the Duck (voice)
Pete Davidson Phlektik
Michael Rosenbaum Martinex
Dee Bradley Baker Blurp (voice)
Elizabeth Debicki Ayesha
Gregg Henry Grandpa Quill
Pom Klementieff Mantis
Daniela Melchior Ura
Daniel Bernhardt Stunts
Jack Kirby Characters
Sean Gunn Kraglin / Young Rocket (voice)
Christopher Fairbank Broker
Mikaela Hoover Floor
Miriam Shor Recorder Vim
Maria Bakalova Cosmo (voice)
Jennifer Holland Administrator Kwol
Louis D'Esposito Executive Producer
Chukwudi Iwuji The High Evolutionary
Bobcat Goldthwait Thanks
Rosemary Brandenburg Set Decoration
Jim Starlin Characters
Roy Thomas Thanks
Loyd Bateman Fight Choreographer
Randy Havens Till
Natalia Safran Controller
Don Heck Characters
Gary Rizzo Sound Re-Recording Mixer
Aurélia Agel Stunt Double
Nico Santos Recorder Theel
Hank Amos Stunts
Asim Chaudhry Teefs
Heidi Moneymaker Stunt Coordinator
Christopher Boyes Sound Re-Recording Mixer
Lloyd Kaufman Gridlemop (voice)
Sarah Halley Finn Casting
Katie Rowe Stunt Double
Karen Abercrombie Grandma Quill
Larry Lieber Characters
Steve Gan Characters
Alicia Vela-Bailey Stunt Double
Clare Grant Crying Krylorian Citizen
Bill Mantlo Characters
Benjamin Byron Davis Bletelsnort
Wayne Dalglish Stunt Coordinator
Victoria Alonso Executive Producer
Doc Kane ADR Mixer
Steve Englehart Characters
Dane DiLiegro Unsavory Octopus
Henry Braham Director of Photography
Bonnie Discepolo Crying Krylorian Citizen
Mike Mignola Thanks
Reinaldo Faberlle Behemoth (voice)
Mallory Thompson Stunts
Amir R. Khan Second Assistant Director
Stephen Blackehart Steemie Blueliver