Vin Diesel Groot (voice)
Sylvester Stallone Stakar Ogord
Karen Gillan Nebula
Dave Bautista Drax
Will Poulter Adam Warlock
Nathan Fillion Master Karja
Linda Cardellini Lylla
Zoe Saldaña Gamora
Chris Pratt Peter Quill / Star-Lord
Seth Green Howard the Duck (voice)
Bradley Cooper Rocket (voice)
Judy Greer War Pig (voice)
James Gunn Director, Writer, Lamb-Shank (voice)
Randy Havens Till
Pom Klementieff Mantis
Daniel Bernhardt Stunts
Jennifer Holland Administrator Kwol
Pete Davidson Phlektik
Stan Lee Characters
Michael Rooker Yondu
Jack Kirby Characters
Elizabeth Debicki Ayesha
Anisha Gibbs Stunts
Mikaela Hoover Floor
Daniela Melchior Ura
Tara Strong Mainframe (voice)
Michael Rosenbaum Martinex
Christopher Fairbank Broker
Molly C. Quinn Molly Ravager
Jim Starlin Characters
Aurélia Agel Stunt Double
Bonnie Discepolo Crying Krylorian Citizen
Miriam Shor Recorder Vim
Reinaldo Faberlle Behemoth (voice)
Dee Bradley Baker Blurp (voice)
Maria Bakalova Cosmo (voice)
Sean Gunn Kraglin / Young Rocket (voice)
Sal Buscema Characters
Louis D'Esposito Executive Producer
Chukwudi Iwuji The High Evolutionary
Kevin Feige Producer
Nicholas Verdi Stunts
Sarah Irwin Stunts
Gregg Henry Grandpa Quill
Danya Bateman Stunts
Bobcat Goldthwait Thanks
Daniel Norris Stunts
Chris Claremont Thanks
Gary Peebles Stunt Double
Terence Rosemore Xlomo Smeth
Nico Santos Recorder Theel
Steve Englehart Characters
Natalia Safran Controller
Keil Oakley Zepernick Stunts
Wayne Dalglish Stunt Coordinator
Kat Rich Assistant Art Director
Gene Colan Thanks
Lloyd Kaufman Gridlemop (voice)
Tiffany Smith Orgocorp Host Friniki
Sarah Halley Finn Casting
Thomas Lappin "C" Camera Operator
Peter Tothpal Hairstylist
Alicia Vela-Bailey Stunt Double
Sarah Alami Ssssaralami
Judianna Makovsky Costume Design
Lisa Joelle Curtis Production Coordinator
Don Heck Characters
Benjamin Byron Davis Bletelsnort
Casey Ann Zeller Stunts
Heidi Moneymaker Stunt Coordinator
Darla Delgado Neelie
Christopher Boyes Sound Re-Recording Mixer