Chris Pratt as Peter Quill / Star-Lord

Zoe Saldaña as Gamora

Dave Bautista as Drax

Karen Gillan as Nebula

Pom Klementieff as Mantis

Vin Diesel as Groot (voice)

Bradley Cooper as Rocket (voice)

Sean Gunn as Kraglin / Young Rocket (voice)

Chukwudi Iwuji as The High Evolutionary

Will Poulter as Adam Warlock

Maria Bakalova as Cosmo (voice)

Elizabeth Debicki as Ayesha

Sylvester Stallone as Stakar Ogord

Austin Freeman as On-Set Groot / Phlektik Guard

Stephen Blackehart as Steemie Blueliver

Terence Rosemore as Xlomo Smeth

Sarah Alami as Ssssaralami

Jasmine Munoz as Hoobtoe

Giovannie Cruz as Orloni Peddler

Nico Santos as Recorder Theel

Miriam Shor as Recorder Vim

Noa Raskin as Baby Rocket (voice)

Linda Cardellini as Lylla

Asim Chaudhry as Teefs

Mikaela Hoover as Floor

Judy Greer as War Pig (voice)

Reinaldo Faberlle as Behemoth (voice)

Tara Strong as Mainframe (voice)

Jared Leland Gore as Krugarr

Michael Rosenbaum as Martinex

Elan Gale as Beardy Ravager

Molly C. Quinn as Molly Ravager

Gerardo Davila as Fitz-Gibbonok

Dee Bradley Baker as Blurp (voice)

Hanna Pak as Humanimal Turtle Experiment

Jennifer Holland as Administrator Kwol

Nathan Fillion as Master Karja

Kyle Mclean as The Boss's Nephew

Benjamin Byron Davis as Bletelsnort

Tiffany Smith as Orgocorp Host Friniki

Joe Daru as Security Assistant

Daniela Melchior as Ura

Jonathan Mercedes as Gamora Shoots This Guy!

Jonathan Fritschi as Carrot Head Guard

Diego Ward as Carrot Head's Friend

Max Bickelhaup as Kitty Orgosentry

Brandon Morales as Dancing Guard

Renae Moneymaker as Violent Orgosentry

Alexis Hadesty as Humanimal Rabbit

Tara Warren as Humanimal Kangaroo

Candi VandiZandi as Humanimal Monkey

Grecia Balboa as Warthog Mother

Caleb Spillyards as Humanimal Panda Bear

Darla Delgado as Neelie

Michelle Civile as Blue Jay Postal Worker

Ken Lyle as Rabbit Businessman

Elodie Clarke as Humanimal Bush Baby Toddler

John William Wright as Humanimal Hyena

Autumn Griffin as Humanimal Bat Child

Skylar Huntley as Humanimal Bat Child

Randy Havens as Till

Dane DiLiegro as Unsavory Octopus

Kai Zen as Phyla

Sarah Anne as Latti

Yael Ocasio as Star Child

Adelynn Spoon as Star Child

Henry Heffernan as Star Child

Brooklyn Skye Oliver as Star Child

Scarlett Blum as Star Child

Baby Dro as Star Child

Emery Grilliot as Star Child

Amelia Waters as Star Child

Lloyd Kaufman as Gridlemop (voice)

Seth Green as Howard the Duck (voice)

Christopher Fairbank as Broker

Rhett Miller as Bzermikitokolok

Natalia Safran as Controller

Murphy Weed as Murf

Michael Rooker as Yondu

James Gunn as Lamb-Shank (voice)

Pete Davidson as Phlektik

Jessica Fontaine as Phlektik Guard

Karen Abercrombie as Grandma Quill

Gregg Henry as Grandpa Quill

Adriana Leonard as Crying Krylorian Citizen

Bonnie Discepolo as Crying Krylorian Citizen

Clare Grant as Crying Krylorian Citizen

Grace Gunn as Crying Krylorian Citizen

Will Gunn as Crying Krylorian Citizen