Characters

(All characters listed in order of rank or number.)

Spartans

 * SPARTAN-008: Li
 * SPARTAN-029: Joshua
 * SPARTAN-030: Vinh
 * SPARTAN-034: Samuel
 * SPARTAN-039: Isaac
 * SPARTAN-043: William
 * SPARTAN-044: Anton
 * SPARTAN-058: Linda
 * SPARTAN-059: Malcom
 * SPARTAN-084: Fhajad
 * SPARTAN-087: Kelly
 * SPARTAN-093: Grace
 * SPARTAN-104: Fredric
 * SPARTAN-117: John -The Master Chief
 * SPARTAN-458 (Dead or Alive 4)
 * James
 * Kirk
 * Rene
 * Cassandra

Artificial Intelligence

 * Cortana
 * Melissa
 * Araquiel
 * Deja
 * Doppler
 * Kalmiya
 * Wellsley
 * Toran
 * Lysithea
 * Solipsil

UNSC Navy

 * Fleet Admiral Terrance Hood
 * Fleet Admiral Harper
 * Admiral Roland Freemont
 * Admiral Micheal Stanforth
 * Admiral Ysionris Jeromi
 * Vice Admiral Danforth Whitcomb
 * Vice Admiral Preston Cole
 * Captain Jacob Keyes
 * Captain De Blanc
 * Captain Wallace
 * Commander Miranda Keyes
 * Major Easley
 * Captain Carol "Foehammer" Rawley
 * Lieutenant Dominique
 * Lieutenant Hikowa
 * Lieutenant Hall
 * Lieutenant "Cookie" Peterson
 * Lieutenant Frye
 * Lieutenant Jaggers
 * Lieutenant (J.G.) Bill Streeter
 * Lieutenant (J.G.) David Brightling
 * Ensign William Lovell
 * Chief Petty Officer Mendez
 * Chief Petty Officer McRobb
 * Tech Officer Sam Marcus
 * Petty Warrant Officer Shiela Polaski

UNSC Marines

 * Major General Nicolas Strauss
 * Major Antonio Silva
 * First Lieutenant Melissa McKay
 * Second Lieutenant McCasky
 * Sergeant Major Avery J. Johnson
 * Master Sergeant Gunns
 * Staff Sergeant Marvin Mobuto
 * Sergeant Banks
 * Sergeant Stacker
 * Corporal Perez
 * Corporal Locklear
 * Corporal Harland
 * Private First Class Wallace A. Jenkins
 * Private Chipps Dubbo
 * Private Manuel Mendoza
 * Private Fincher
 * Private Walker
 * Private Cochran

Office of Naval Intelligence (ONI)

 * Colonel James Ackerson
 * Colonel Hezrog
 * Major Standish
 * First Lieutenant Elias Haverson

Civilians

 * Dr. Catherine Halsey
 * Dr. Robert Mclees
 * Janissary James
 * Jersey Morelli

Prophets

 * High Prophet of Truth
 * High Prophet of Mercy
 * High Prophet of Regret
 * Prophet of Supposition
 * Prophet of Disdain
 * Prophet of Pity
 * Prophet of Grief
 * Prophet of Glory
 * Prophet of Wisdom
 * Prophet of Fear
 * Prophet of Sorrow

Elites

 * Arbiter
 * Orna 'Fulsamee - Zealot
 * Half-Jaw - Ultra
 * Soha 'Rolamee - Council of Masters member
 * Ado 'Mortumee - Council of Masters spy
 * Zuka 'Zamamee - SpecOps Elite
 * Isna 'Nosolee - Minor Elite
 * Noga 'Putumee - Field Master
 * Huki 'Umamee
 * Bako 'Ikaporamee

Brutes

 * Tartarus
 * Bracktanus

Hunters

 * Igido Nosa Hurru
 * Ogada Nosa Fasu

Jackals

 * Jak
 * Yeg
 * Bok

Grunts

 * Yayap - SpecOps Grunt
 * Zawaz - Grunt Minor
 * Mehmep
 * Linglin
 * Gagaw

Artificial Intelligence

 * Seeker

Forerunner Characters

 * 343 Guilty Spark
 * 2401 Penitent Tangent

Flood Characters

 * The Gravemind

Heretic Characters

 * Heretic Leader

Eridanus Rebel Characters

 * Colonel Robert Watts
 * Governor Jacob Jiles