Vin Diesel Groot (voice)
Zoe Saldaña Gamora
Sylvester Stallone Stakar Ogord
Dave Bautista Drax
Nathan Fillion Master Karja
Chris Pratt Peter Quill / Star-Lord
Seth Green Howard the Duck (voice)
Linda Cardellini Lylla
Will Poulter Adam Warlock
Karen Gillan Nebula
Pete Davidson Phlektik
Elizabeth Debicki Ayesha
Bradley Cooper Rocket (voice)
Jennifer Holland Administrator Kwol
Molly C. Quinn Molly Ravager
Randy Havens Till
Gregg Henry Grandpa Quill
Pom Klementieff Mantis
Daniela Melchior Ura
Tara Strong Mainframe (voice)
Michael Rooker Yondu
James Gunn Writer, Director, Lamb-Shank (voice)
Judy Greer War Pig (voice)
Daniel Bernhardt Stunts
Karen Abercrombie Grandma Quill
Daniel Norris Stunts
Bobcat Goldthwait Thanks
Stan Lee Characters
Dee Bradley Baker Blurp (voice)
Michael Rosenbaum Martinex
Miriam Shor Recorder Vim
Amber Shani Hamilton Hairstylist
Maria Bakalova Cosmo (voice)
Chukwudi Iwuji The High Evolutionary
Jonathan Fritschi Carrot Head Guard
Kevin Feige Producer
Benjamin Byron Davis Bletelsnort
Daniel Boccoli First Assistant Editor
Myke Schwartz Stunts
Jessica Fontaine Phlektik Guard
Gerardo Davila Fitz-Gibbonok
Mikaela Hoover Floor
Ben Skorstad Pilot
Christopher Fairbank Broker
Louis D'Esposito Executive Producer
Nico Santos Recorder Theel
Mike Friedrich Thanks
Nicholas Verdi Stunts
Asim Chaudhry Teefs
Sean Gunn Kraglin / Young Rocket (voice)
Shaun Farley Sound Effects Editor
Jack Kirby Characters
Thomas Patrick Ryan Watson Stunts
Sarah Alami Ssssaralami
Dan Abnett Thanks
Mike Mignola Thanks
Jim Starlin Characters
Elan Gale Beardy Ravager
Aurélia Agel Stunt Double
Kai Zen Phyla
Robb Boyd Music Editor
Alicia Vela-Bailey Stunt Double
Clare Grant Crying Krylorian Citizen
Jim Valentino Thanks
Sarah Anne Latti
Sonia Y. Dawson Production Accountant
Kat Rich Assistant Art Director
Natalia Safran Controller
Cara Marie Chooljian Stunts
Tiffany Smith Orgocorp Host Friniki
Lloyd Kaufman Gridlemop (voice)
Larry Lieber Characters