About Halo Characters
Welcome to the comprehensive Halo characters list and database. Here you’ll find detailed profiles of all major and supporting characters in the Halo series. Each profile covers abilities, personality traits, backstories, and relationships.
What You'll Discover
- Complete character bios and personality types
- Unique abilities, roles, and gameplay traits
- Lore connections, occupations, and recurring appearances
- Data-backed Character Battles with radar charts and quick verdicts
Character Roles in Halo
Halo features a wide variety of characters with distinct roles and responsibilities:
- Artificial Intelligence/Companion characters
- Flood Compound Intelligence characters
- Spartan Super-Soldier/Protagonist characters
- Covenant Supreme Leader characters
- Covenant Warriors characters
- Marine Non-Commissioned Officer characters
Below you’ll find the complete list of Halo characters, organized for easy browsing and discovery.
Factions
Filter the list by faction
Video Coming Soon
Occupation: Artificial Intelligence/Companion
Debut: Episode 1
Affiliation: UNSC Navy, ONI (Office of Naval Intelligence)
Faction: United Nations Space Command (UNSC)
Race: Human
Gender: Female (programmed personality)
Age: 8 years (at time of rampancy)
Cortana
HaloArtificial Intelligence/Companion
Advanced AI construct created from a clone of Dr. Catherine Halsey's brain, Master Chief's closest companion.
Occupation: Artificial Intelligence/Companion
Debut: Episode 1
Affiliation: UNSC Navy, ONI (Office of Naval Intelligence)
Faction: United Nations Space Command (UNSC)
Race: Human
Gender: Female (programmed personality)
Age: 8 years (at time of rampancy)
Personality
MysteriousIntelligentWittyLoyalProtective
Abilities
Computer system infiltrat...Data analysisTactical supportElectronic warfareHacking
Notable Items
Data crystal chipHolographic projectorsNeural interfaceUNSC databases
Quote:
Don't make a girl a promise... if you know you can't keep it.
character
Video Coming Soon
Occupation: Artificial Intelligence/Companion
Race: Unknown
Gender: Unknown
Age: Unknown
Cortana
HaloArtificial Intelligence/Companion
Advanced AI construct created from a clone of Dr. Catherine Halsey's brain, Master Chief's closest companion.
Occupation: Artificial Intelligence/Companion
Race: Unknown
Gender: Unknown
Age: Unknown
Artificial Intelligence/Companion
Occupation: Flood Compound Intelligence
Debut: Episode 1
Affiliation: Flood Collective
Faction: The Flood
Race: Human
Gender: N/A
Age: Unknown
Gravemind
HaloFlood Compound Intelligence
Collective consciousness of the parasitic Flood, representing the ultimate threat to all sentient life.
Occupation: Flood Compound Intelligence
Debut: Episode 1
Affiliation: Flood Collective
Faction: The Flood
Race: Human
Gender: N/A
Age: Unknown
Personality
MysteriousAncientManipulativeIntelligentMalevolent
Abilities
Collective consciousnessBiological assimilationAncient knowledgeManipulationRegeneration
Quote:
I am a monument to all your sins.
character
Occupation: Spartan Super-Soldier/Protagonist
Debut: Episode 1
Affiliation: UNSC Navy, Spartan-II Program
Faction: United Nations Space Command (UNSC)
Race: Human
Gender: Male
Age: 49 (chronologically), 41 (biologically due to cryo-sleep)
Master Chief Petty Officer John-117
HaloSpartan Super-Soldier/Protagonist
Legendary Spartan super-soldier and humanity's greatest warrior in the fight against alien threats.
Occupation: Spartan Super-Soldier/Protagonist
Debut: Episode 1
Affiliation: UNSC Navy, Spartan-II Program
Faction: United Nations Space Command (UNSC)
Race: Human
Gender: Male
Age: 49 (chronologically), 41 (biologically due to cryo-sleep)
Personality
MysteriousStoicDeterminedLoyalProtective
Abilities
Superhuman strengthEnhanced reflexesTactical geniusWeapon masteryLeadership
Notable Items
MJOLNIR Powered Assault ArmorMA40 Assault RifleCortana AIEnergy Sword
Quote:
I need a weapon.
Occupation: Spartan Super-Soldier/Protagonist
Race: Unknown
Gender: Unknown
Age: Unknown
Master Chief Petty Officer John-117
HaloSpartan Super-Soldier/Protagonist
Legendary Spartan super-soldier and humanity's greatest warrior in the fight against alien threats....
Occupation: Spartan Super-Soldier/Protagonist
Race: Unknown
Gender: Unknown
Age: Unknown
Spartan Super-Soldier/Protagonist
Occupation: Covenant Supreme Leader
Debut: Episode 1
Affiliation: High Prophets, Covenant Hierarchy
Faction: Covenant Empire
Race: Human
Gender: Male
Age: Unknown
Prophet of Truth
HaloCovenant Supreme Leader
Manipulative leader of the Covent who seeks to activate the Halo rings for religious purposes.
Occupation: Covenant Supreme Leader
Debut: Episode 1
Affiliation: High Prophets, Covenant Hierarchy
Faction: Covenant Empire
Race: Human
Gender: Male
Age: Unknown
Personality
MysteriousManipulativeFanaticalRuthlessIntelligent
Abilities
Political manipulationReligious authorityStrategic planningCovenant commandDeception
Quote:
I am Truth! The voice of the Covent!
Occupation: Covenant Warriors
Debut: Episode 1
Affiliation: Unknown
Faction: Covenant Empire / Swords of Sanghelios
Race: Human
Gender: Various
Age: Unknown
Sangheili (Elite)
HaloCovenant Warriors
Proud warrior race that served as the military backbone of the Covent before the Great Schism.
Occupation: Covenant Warriors
Debut: Episode 1
Affiliation: Unknown
Faction: Covenant Empire / Swords of Sanghelios
Race: Human
Gender: Various
Age: Unknown
Personality
MysteriousHonorableProudWarrior-likeNoble
Abilities
Master combat skillsEnergy sword masteryMilitary tacticsHonor codeLeadership
Quote:
Wort wort wort!
Video Coming Soon
Occupation: Marine Non-Commissioned Officer
Race: Unknown
Gender: Unknown
Age: Unknown
Sergeant Major Avery Junior Johnson
HaloMarine Non-Commissioned Officer
Tough-as-ils Marine sergeant and one of the few humans immune to Flood infection.
Occupation: Marine Non-Commissioned Officer
Race: Unknown
Gender: Unknown
Age: Unknown
Marine Non-Commissioned Officer
Occupation: Elite Warrior/Former Covenant Commander
Debut: Episode 1
Affiliation: Elite Separatists, UNSC Alliance
Faction: Swords of Sanghelios (formerly Covenant)
Race: Human
Gender: Male
Age: Unknown (mature Elite)
Thel 'Vadam (The Arbiter)
HaloElite Warrior/Former Covenant Commander
Former Covent Supreme Commander who becomes an ally to humanity after learning the truth about the Halo rings.
Occupation: Elite Warrior/Former Covenant Commander
Debut: Episode 1
Affiliation: Elite Separatists, UNSC Alliance
Faction: Swords of Sanghelios (formerly Covenant)
Race: Human
Gender: Male
Age: Unknown (mature Elite)
Personality
MysteriousHonorableProudWiseDetermined
Abilities
Master swordsmanMilitary tacticsLeadershipCombat expertiseHonor code
Notable Items
Energy SwordArbiter ArmorCovenant weaponsElite combat harness
Quote:
Were it so easy.
Occupation: Elite Warrior/Former Covenant Commander
Race: Unknown
Gender: Unknown
Age: Unknown
Thel 'Vadam (The Arbiter)
HaloElite Warrior/Former Covenant Commander
Former Covent Supreme Commander who becomes an ally to humanity after learning the truth about the...
Occupation: Elite Warrior/Former Covenant Commander
Race: Unknown
Gender: Unknown
Age: Unknown
Elite Warrior/Former Covent Commander
Occupation: Covenant Infantry
Debut: Episode 1
Affiliation: Unknown
Faction: Covenant Empire
Race: Human
Gender: Various
Age: Unknown
Unggoy (Grunt)
HaloCovenant Infantry
Small, methane-breathing aliens serving as cannon fodder in the Covent military hierarchy.
Occupation: Covenant Infantry
Debut: Episode 1
Affiliation: Unknown
Faction: Covenant Empire
Race: Human
Gender: Various
Age: Unknown
Personality
MysteriousCowardlyLoyalNumerousExpendable
Abilities
Basic combatEquipment operationSwarm tacticsMethane breathing
Quote:
Run away! Run away!
Occupation: Human Infantry
Debut: Episode 1
Affiliation: Unknown
Faction: UNSC Marine Corps
Race: Human
Gender: Various
Age: Unknown
UNSC Marine
HaloHuman Infantry
Brave human soldiers fighting on the front lines against overwhelming alien forces.
Occupation: Human Infantry
Debut: Episode 1
Affiliation: Unknown
Faction: UNSC Marine Corps
Race: Human
Gender: Various
Age: Unknown
Personality
MysteriousBraveLoyalDeterminedHumorous
Abilities
Military trainingWeapon proficiencyTactical coordinationCourage under fire
Quote:
Oorah! Let's get some!
character
Occupation: Forerunner Warrior-Servant
Debut: Episode 1
Affiliation: Warrior-Servant caste
Faction: Forerunner Ecumene (rogue)
Race: Human
Gender: Male
Age: Unknown
Ur-Didact
HaloForerunner Warrior-Servant
Ancient Forerunner military commander driven mad by imprisonment and torture, seeking revenge on humanity.
Occupation: Forerunner Warrior-Servant
Debut: Episode 1
Affiliation: Warrior-Servant caste
Faction: Forerunner Ecumene (rogue)
Race: Human
Gender: Male
Age: Unknown
Personality
MysteriousAncientBitterIntelligentVengeful
Abilities
Forerunner technology mas...Constraint field manipula...Ancient knowledgeMilitary strategyComposer control
Quote:
So fades the great harvest of my betrayal.
character
Character Battles
Pairwise radar charts based on Enjoyip Battle Score (Attack Potency, Speed, Durability, Combat Intelligence, Hax).
Top Battle Score Characters
A quick, data-driven snapshot of the strongest characters based on the Enjoyip Battle Score framework. Try the Battle Simulator.
6 picks
| Rank | Character | Battle Score | Tier |
|---|---|---|---|
| 1 | Gravemind | 9.45 | god |
| 2 | Didact | 9.38 | god |
| 3 | Master Chief | 8.84 | mid |
| 4 | Prophet of Truth | 8.70 | high-meta |
| 5 | Arbiter | 8.10 | meta |
| 6 | Cortana | 7.91 | mid |
Battle Score is a composite metric designed for cross-franchise comparisons. It is not a canonical in-universe power level.
Cortana vs Gravemind
Final Verdict
Winner: Gravemind — Low Difficulty
According to the Enjoyip Battle Score, Gravemind holds the overall advantage over Cortana. While both are formidable fighters, Gravemind's higher total score (9.45 to 7.91) gives them the decisive edge in a neutral scenario.
Cortana vs Master Chief
Final Verdict
Winner: Master Chief — Low Difficulty
According to the Enjoyip Battle Score, Master Chief holds the overall advantage over Cortana. While both are formidable fighters, Master Chief's higher total score (8.84 to 7.91) gives them the decisive edge in a neutral scenario.
Cortana vs Prophet of Truth
Final Verdict
Winner: Prophet of Truth — Low Difficulty
According to the Enjoyip Battle Score, Prophet of Truth holds the overall advantage over Cortana. While both are formidable fighters, Prophet of Truth's higher total score (8.70 to 7.91) gives them the decisive edge in a neutral scenario.
Cortana vs Arbiter
Final Verdict
Winner: Arbiter — High Difficulty / Debatable
According to the Enjoyip Battle Score, Arbiter holds the overall advantage over Cortana. While both are formidable fighters, Arbiter's higher total score (8.10 to 7.91) gives them the decisive edge in a neutral scenario.
Cortana vs Didact
Final Verdict
Winner: Didact — Low Difficulty
According to the Enjoyip Battle Score, Didact holds the overall advantage over Cortana. While both are formidable fighters, Didact's higher total score (9.38 to 7.91) gives them the decisive edge in a neutral scenario.
Gravemind vs Master Chief
Final Verdict
Winner: Gravemind — Low Difficulty
According to the Enjoyip Battle Score, Gravemind holds the overall advantage over Master Chief. While both are formidable fighters, Gravemind's higher total score (9.45 to 8.84) gives them the decisive edge in a neutral scenario.
Gravemind vs Prophet of Truth
Final Verdict
Winner: Gravemind — Low Difficulty
According to the Enjoyip Battle Score, Gravemind holds the overall advantage over Prophet of Truth. While both are formidable fighters, Gravemind's higher total score (9.45 to 8.70) gives them the decisive edge in a neutral scenario.
Gravemind vs Arbiter
Final Verdict
Winner: Gravemind — Low Difficulty
According to the Enjoyip Battle Score, Gravemind holds the overall advantage over Arbiter. While both are formidable fighters, Gravemind's higher total score (9.45 to 8.10) gives them the decisive edge in a neutral scenario.
Gravemind vs Didact
Final Verdict
Winner: Gravemind — High Difficulty / Debatable
According to the Enjoyip Battle Score, Gravemind holds the overall advantage over Didact. While both are formidable fighters, Gravemind's higher total score (9.45 to 9.38) gives them the decisive edge in a neutral scenario.
Master Chief vs Prophet of Truth
Final Verdict
Winner: Master Chief — High Difficulty / Debatable
According to the Enjoyip Battle Score, Master Chief holds the overall advantage over Prophet of Truth. While both are formidable fighters, Master Chief's higher total score (8.84 to 8.70) gives them the decisive edge in a neutral scenario.
Master Chief vs Arbiter
Final Verdict
Winner: Master Chief — Low Difficulty
According to the Enjoyip Battle Score, Master Chief holds the overall advantage over Arbiter. While both are formidable fighters, Master Chief's higher total score (8.84 to 8.10) gives them the decisive edge in a neutral scenario.
Master Chief vs Didact
Final Verdict
Winner: Didact — Low Difficulty
According to the Enjoyip Battle Score, Didact holds the overall advantage over Master Chief. While both are formidable fighters, Didact's higher total score (9.38 to 8.84) gives them the decisive edge in a neutral scenario.
Prophet of Truth vs Arbiter
Final Verdict
Winner: Prophet of Truth — Low Difficulty
According to the Enjoyip Battle Score, Prophet of Truth holds the overall advantage over Arbiter. While both are formidable fighters, Prophet of Truth's higher total score (8.70 to 8.10) gives them the decisive edge in a neutral scenario.
Prophet of Truth vs Didact
Final Verdict
Winner: Didact — Low Difficulty
According to the Enjoyip Battle Score, Didact holds the overall advantage over Prophet of Truth. While both are formidable fighters, Didact's higher total score (9.38 to 8.70) gives them the decisive edge in a neutral scenario.
Arbiter vs Didact
Final Verdict
Winner: Didact — Low Difficulty
According to the Enjoyip Battle Score, Didact holds the overall advantage over Arbiter. While both are formidable fighters, Didact's higher total score (9.38 to 8.10) gives them the decisive edge in a neutral scenario.