Linda Cardellini Lylla
Vin Diesel Groot (voice)
Sylvester Stallone Stakar Ogord
Karen Gillan Nebula
Chris Pratt Peter Quill / Star-Lord
Bradley Cooper Rocket (voice)
Zoe Saldaña Gamora
Dave Bautista Drax
Will Poulter Adam Warlock
Nathan Fillion Master Karja
James Gunn Writer, Lamb-Shank (voice), Director
Tara Strong Mainframe (voice)
Stan Lee Characters
Michael Rosenbaum Martinex
Elizabeth Debicki Ayesha
Molly C. Quinn Molly Ravager
Pom Klementieff Mantis
Daniela Melchior Ura
Michael Rooker Yondu
Sean Gunn Kraglin / Young Rocket (voice)
Judy Greer War Pig (voice)
Pete Davidson Phlektik
Christopher Fairbank Broker
Gregg Henry Grandpa Quill
Bobcat Goldthwait Thanks
Mikaela Hoover Floor
Jennifer Holland Administrator Kwol
Kai Zen Phyla
Seth Green Howard the Duck (voice)
Dee Bradley Baker Blurp (voice)
Benjamin Byron Davis Bletelsnort
Jim Starlin Characters
Daniel Bernhardt Stunts
Chukwudi Iwuji The High Evolutionary
Kevin Feige Producer
Miriam Shor Recorder Vim
Jack Kirby Characters
Randy Havens Till
Elan Gale Beardy Ravager
Steve Englehart Characters
Nico Santos Recorder Theel
Reinaldo Faberlle Behemoth (voice)
Maria Bakalova Cosmo (voice)
Dane DiLiegro Unsavory Octopus
Karen Abercrombie Grandma Quill
Terence Rosemore Xlomo Smeth
Aurélia Agel Stunt Double
Sal Buscema Characters
Jonathan Mercedes Gamora Shoots This Guy!
Peter David Thanks
Erika Keck Stunts
Heidi Moneymaker Stunt Coordinator
Roy Thomas Thanks
Gene Colan Thanks
Bill Mantlo Characters
Alicia Vela-Bailey Stunt Double
Louis D'Esposito Executive Producer
Tatiana S. Riegel Editor
Asim Chaudhry Teefs
Keith Giffen Characters
Marco Rubeo Set Designer
Tiffany Smith Orgocorp Host Friniki
Beth Mickle Production Design
Christopher Flick Foley Supervisor
Renae Moneymaker Violent Orgosentry, Stunts
Natalia Safran Controller
Steve Gan Characters
Henry Braham Director of Photography
CC Ice Stunt Double
Molly Doyle Casting Associate
Scarlett Blum Star Child
Caleb Spillyards Humanimal Panda Bear, Stunts