Vin Diesel Groot (voice)
Sylvester Stallone Stakar Ogord
Zoe Saldaña Gamora
Chris Pratt Peter Quill / Star-Lord
Dave Bautista Drax
Linda Cardellini Lylla
Will Poulter Adam Warlock
Nathan Fillion Master Karja
Seth Green Howard the Duck (voice)
Stan Lee Characters
Pete Davidson Phlektik
Bradley Cooper Rocket (voice)
Judy Greer War Pig (voice)
James Gunn Writer, Director, Lamb-Shank (voice)
Tara Strong Mainframe (voice)
Gregg Henry Grandpa Quill
Karen Gillan Nebula
Molly C. Quinn Molly Ravager
Pom Klementieff Mantis
Michael Rooker Yondu
Daniela Melchior Ura
Miriam Shor Recorder Vim
Karen Abercrombie Grandma Quill
Peter Tothpal Hairstylist
Dee Bradley Baker Blurp (voice)
Elizabeth Debicki Ayesha
Daniel Norris Stunts
Jennifer Holland Administrator Kwol
Bobcat Goldthwait Thanks
Randy Havens Till
Michael Rosenbaum Martinex
Amber Shani Hamilton Hairstylist
Daniel Bernhardt Stunts
Jonathan Fritschi Carrot Head Guard
Kevin Feige Producer
Natalia Safran Controller
Daniel Boccoli First Assistant Editor
Sean Gunn Kraglin / Young Rocket (voice)
Maria Bakalova Cosmo (voice)
Myke Schwartz Stunts
Bill Mantlo Characters
Jessica Fontaine Phlektik Guard
Gerardo Davila Fitz-Gibbonok
Christopher Fairbank Broker
Jim Starlin Characters
Lloyd Kaufman Gridlemop (voice)
Ben Skorstad Pilot
Mikaela Hoover Floor
Beth Mickle Production Design
Nico Santos Recorder Theel
John Buscema Characters
Mike Friedrich Thanks
Lee Orloff Sound Mixer
Jack Kirby Characters
Mallory Thompson Stunts
Nicholas Verdi Stunts
Don Heck Characters
Sarah Irwin Stunts
Shaun Farley Sound Effects Editor
Steve Gan Characters
Judianna Makovsky Costume Design
David J. Grant Co-Producer
Doc Kane ADR Mixer
Kat Rich Assistant Art Director
Rob de Groot Stunt Double
Rosemary Brandenburg Set Decoration
Benjamin Byron Davis Bletelsnort
Thomas Patrick Ryan Watson Stunts
Sarah Alami Ssssaralami
Dan Abnett Thanks
Kate Abraham Set Costumer
John Roesch Foley Artist