Halo

Pablo Schreiber

Master Chief, Spartan-117 / John-117

Natascha McElhone

Dr. Catherine Halsey

Shabana Azmi

Margaret Parangosky

Natasha Culzac

Riz-028

Olive Gray

Dr. Miranda Keyes

Yerin Ha

Kwan Ha

Bentley Kalu

Vannak-134

Kate Kennedy

Kai-125

Charlie Murphy

Makee

Danny Sapani

Jacob Keyes

Jen Taylor

Cortana (voice)

Bokeem Woodbine

Soren-066

Kate Kennedy

Kai-125

Joseph Morgan

James Ackerson

Christina Bennington

Cortana

Fiona O'Shaughnessy

Laera

Cristina Rodlo

Corporal Talia Perez

Viktor Åkerblom

Arbiter Var 'Gatanai

Tylan Bailey

Kessler

Ryan McParland

Dr. Adun Saly

Burn Gorman

Vinsher Grath

Casper Knopf

Young John

Julian Bleach

Hierarch Mercy (voice)

Olwen Fouéré

The Mother

Jamie Beamish

Kaidon

Sarah Ridgeway

John's Mother

Hans Peterson

Ops Tech / Ops Tech Pereira / Sangheili Guard

Duncan Pow

John's Father

Hilton McRae

Hierarch Regret (voice)

Claudius Peters

MP Malya

Karl Johnson

Hierarch Truth (voice)

Juliette Motamed

Carina

David Crowley

Castor

Iliasz Shweirif

Virgil

Ivanno Jeremiah

Antares

Maria Luisa Costa

Manuela Perez

Marvin 'Krondon' Jones III

Louis-036

Christian Ochoa

Danilo

Anna Koval

Captain Briggs

Dani Klupsch

Lt Mullins

Ailsa Davidson

Tech Smith

Tom Gaskin

Tech Jones

Christopher Karl Johnson

Truth

Angie Cepeda

Violetta Franco

Caroline Boulton

Flight Tech Javal / Flight Technician Javal

Johnny K. Palmer

Control Tech Ladi

Sky Yang

Ruben

Ian Pirie

Professor

공정환

Jin Ha

Samuel Tamunotoku Gbobo

Marine Doyle

Karen Gagnon

Flight Tech Juric

Danielle Fiamanya

UNSC Nurse

Felipe Gabriel Mariano

Malchin

Nila Aalia

Agatha Terne

Yuna Shin

Soojin Ha

Sebastian Orozco

Cousin Ant

Eliseo Barrionuevo

Cousin Mateo

María José Bavio

Aunt Lucia

Karen Connell

Yaz-112

Bronte Carmichael

Julia

Eniko Fulop

Marine Pvt / Olsson

Thomas Dominique

Val-015

Sebastián Capitán Viveros

Sergeant Mendez

Iván Fenyő

Bota

Nneka Okoye

Djanka

Shaun Aylward

Esso

Hayley Canham

Cara

Zachary Hing

Neru

Olivia Liu

Faaz

Miklós Béres

Sentry

Chan Woo Lim

Flight Tech Doan

Mirjam Novak

Flight Tech Tesic

Dávid Csányi

Colonel Stacker

Sebastián Viveros

Sergeant Mendez

Khash-Erdene Ganbold

Jong Sook

Ali Khan

Attu

Isaura Barbé-Brown

Katie Rios

Miranda Wilson

Penma

Francisco Labbe

David Agnoli

Iván Fenyő

Bota

Roderick Hill

Major Ira Halal

Josette Simon

Desiderata

Johann Myers

Reth

Nóra Trokán

Daranka

Karl Akortia

Marine Gunnery Sergeant

Amirreza Farajvand

Marine Private

Jessica Fostekew

Marine Sergeant Borovoi

Dávid Miller

Murdo

Zsuzsanna Bíró

Young Girl

Gustavo Chiang

MP Takacs

Oladapo Oluwatosin Okunola

MP Choksey

Jaram Lee

Madrigal Elder

Csémy Balázs

Evans

Scott Karim

Fazekas

Quynh Ngoc Do

Marine Lieutenant Goy

Balázs Bölkény

Wounded Marine

Martin Fisher

Raphael Bivas

J. Sebastian Lee

Young Father

Péter Jankovics

Filip

Gábor Nagypál

Squirrel

Anna Trokán

Trokan

Máté Bede-Fazekas

Pete

Joshua Jo

Man at the Well

Keir Dullea

Fleet Admiral Hood

Jude Cudjoe

Teenage Soren

Luke Polie

Captain Nix

Benjamin Wainwright

Gunnery Sgt Boone

Sam Gittins

Corporal Sims

Micah Karns

Corporal Fisk

Genesis Lynea

Lance Corporal Bowman

Luke Davis

Private Rand

Blake Patrick Anderson

Felix

Josie Lawrence

Minnie

Ashwin Varma

Refugee Husband

Vivien Nagy

Refugee Wife

Tomi May

Baz

Kamilla Szász

Vera

Franc Ashman

Ruby Ann

Thomas Doninique

Val-015

Nathan Wiley

Karim-002

Jessica Chisnall

Virtual Companion

Sonny Poon Tip

Ensign Bishara

Mich Todorovic

Clive

Inotay Ákos

Oswyn

Zar Succarotte

Spiff Henchman #1

Narantsogt Tsogtsaikhan

Spiff Henchman #2

Jack Nevils

Marine Lt

Bill Paterson

Ackerson's Dad

Ádám Szabó

Guard #1

Marcell Mászári

Guard #2

Olwen May

Jade

Lotti Kővári

Specialist Pavlenko

Elijah Isaiah Cook

Captain Tyrell

Romany Gilmour

Marine Medic

Tamas Szaraz

Gunnery Sergeant

Stuart Laing

Doctor

Johnny O'Down

McCoy

Tímea Udvari-Kardos

Homesteader Woman

István Szacsvai

Homesteader Man

Rebecka Johnston

Holystander #1

Cat Simmons

Garwyn

Lara Peake

Fern

Eddie Karanja

Boy

Aruzhan Ilaikova

Young Acolyte

Attila Heltai

Gilroy

Narcisse Mame

Okada

Payal Vashist

Scientist

Levente Pupics

ONI Guard

Bálint Antal

Black Ops Lieutenant

Andrew Senesie

Commander Bookman

Harry Lloyd

343 Guilty Spark (voice)

Audrey Brisson-Jutras

Janine

Amro Mahmoud

Lead Scientist

Zsófia Bach

Scientist