Chris Pratt
Peter Quill / Star-Lord
Dave Bautista
Drax
Karen Gillan
Nebula
Pom Klementieff
Mantis
Vin Diesel
Groot (voice)
Bradley Cooper
Rocket (voice)
Sean Gunn
Kraglin
Rhett Miller
Bzermikitokolok
Murry Hammond
Alien Band (Kortolbookalia)
Ken Bethea
Alien Band (Sliyavastojoo)
Philip Peeples
Alien Band (Phloko)
Michael Rooker
Yondu
Kevin Bacon
Kevin Bacon
Luke Klein
Young Peter Quill
Marija Bakalowa
Cosmo the Dog (voice)
Kyra Sedgwick
Kyra Sedgwick (voice)
Don McLeod
Statue Guy
Daniel Bernhardt
Gobot
Flula Borg
Bartender
Rusty Schwimmer
Sara
Tinashe Kajese
Officer Fitzgibbon
Rachel Luttrell
Upside-Down Cop
Giovannie Cruz
Orloni Peddler
Stephen Blackehart
Steemie
Sarah Alami
Gloob
Terence Rosemore
Gurb
Si Chen
Sobbing Woman
Thomas McNamara
'Captain America'
Michelle Gunn
Tourist Mom
Matthew Withers
Handsome Man
Helene D'Auria
Dispatcher (voice)
Barry Curtis
Officer R. Bobbitt
Troy Beecham
Drunken Knowherean (uncredited)
Christina R Gregg
Knowhere Citizen