Chris Pratt
Peter Quill / Star-Lord

Zoe Saldaña
Gamora

Dave Bautista
Drax

Vin Diesel
Baby Groot (voice)

Bradley Cooper
Rocket (voice)

Kurt Russell
Ego

Michael Rooker
Yondu

Karen Gillan
Nebula

Pom Klementieff
Mantis

Sylvester Stallone
Stakar Ogord

Elizabeth Debicki
Ayesha

Chris Sullivan
Taserface

Sean Gunn
Kraglin / On-Set Rocket

Tommy Flanagan
Tullk

Laura Haddock
Meredith Quill

Aaron Schwartz
Young Ego Facial Reference

Hannah Gottesman
Sovereign Chambermaid

Hilty Bowen
Sovereign Pilot

Ben Browder
Sovereign Admiral

Alex Klein
Zylak

Luke Cook
Zylak's Frenemy

Evan Jones
Retch

Joe Fria
Oblo

Terence Rosemore
Narblik

Jimmy Urine
Halfnut

Stephen Blackehart
Brahl

Steve Agee
Gef

Blondy Baruti
Huhtar

Richard Christy
'Down There!'

Rob Zombie
Unseen Ravager

Sierra Love
Robot Courtesan

Kendra Carelli
Robot Courtesan

Milynn Sarley
Robot Courtesan

Seth Green
Howard the Duck (voice)

Molly C. Quinn
Howard's Date

Michael Rosenbaum
Martinex

Rhoda Griffis
Sneeper Madame

Stan Lee
Watcher Informant

David Hasselhoff
The Form of David Hasselhoff

Mac Wells
Officer Fitzgibbon

Leota Gunn
Weird Old Man's Mistress

Elizabeth Faith Ludlow
Easik Mother

Wyatt Oleff
Young Peter Quill

Gregg Henry
Grandpa Quill

Damita Jane Howard
Grandpa Quill's Friend

Ving Rhames
Charlie-27

Michelle Yeoh
Aleta Ogord

Mike Escamilla
Scrote (uncredited)

Miley Cyrus
Mainframe (voice) (uncredited)

Jeff Goldblum
En Dwi Gast / Grandmaster (uncredited)

Donny Carrington
Kree Monk (uncredited)

Fred Galle
Sovereign Leader (uncredited)

Alphonso A'Qen-Aten Jackson
Ravager (uncredited)

Kelly Richardson
Daisy Kiu (uncredited)

Guillermo Rodriguez
Cop #2 (uncredited)

Josh Tipis
Humanoid Ravager (uncredited)

Jason Williams
Huge Guard of the Sovereign Nation (uncredited)