Halo: Campaign Evolved - Characters
The human cast and AI companions at the heart of Halo: Combat Evolved, from the Master Chief and the AI Cortana to the UNSC officers of the Pillar of Autumn and the enigmatic Forerunner Monitor 343 Guilty Spark. The Covenant and the Flood are covered in the enemies section.
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of 11 entries
· updated 2026-09-15
| Name | Type | Description | Role | Faction | Abilities | Source |
|---|---|---|---|---|---|---|
| Master Chief (SPARTAN-117 / John-117) | Protagonist | The armored supersoldier of the Spartan-II program and the player character. | Protagonist | UNSC | Rechargeable MJOLNIR energy shielding Two-weapon ballistic and plasma combat Mastery of all human and Covenant weaponry Vehicle piloting and boarding | Player character |
| Cortana | AI Companion | A smart AI fragment created from the cloned brain of Dr. | Allied AI | UNSC | Forerunner system navigation and decryption Tactical analysis and hacking Guidance through the Pillar of Autumn and ring defenses | Interfaced with the Master Chief's armor aboard the Pillar of Autumn |
| Captain Jacob Keyes | UNSC Officer | The seasoned, by-the-book captain of the UNSC Pillar of Autumn whose discovery of the ruins of a dead civilization reshaped humanity's war. | Commanding Officer | UNSC | Tactical command and naval strategy Extraction of intelligence from captured Covenant vessels | Pillar of Autumn command; later held aboard the Truth and Reconciliation |
| Sergeant Major Avery Johnson | UNSC Marine NCO | The grizzled Marine senior non-commissioned officer who leads the ground forces that crash-land with the Chief. | Supporting Ally | UNSC | Marine infantry command Guerilla tactics and close-quarters fighting | Survivor officer leading Marine forces on the ring |
| Foehammer (Echo 419) | UNSC Pilot | The call sign of the Pelican dropship pilot Carol Rawley, who ferries the Chief and Marines across the ring under heavy fire. | Supporting Ally | UNSC | Pelican dropship piloting Troop and vehicle extraction | UNSC aerial transport pilot (Echo 419) |
| 343 Guilty Spark | Forerunner Monitor | The floating, metal-skinned Forerunner Monitor of Installation 04, centuries old and obsessed with his primary function. | Enigmatic Guide | Forerunner | Forerunner control-room operation Regenerative energy attacks Knowledge of the ring's construction | Encountered at the Library and throughout the ring's facilities |
| Sergeant Marcus Stacker | UNSC Marine NCO | A veteran Marine squad leader who fights alongside the Chief through several of the campaign's infantry engagements, including the assault on the Truth and Reconciliation and the later pushes across the ring. | Supporting Ally | UNSC | Fireteam leadership and fire discipline Assault tactics and bunker clearing Heavy weapons operation | Marine squad leader encountered across the campaign |
| Corporal Chips Dubbo | UNSC Marine | The cheerfully foul-mouthed Australian Marine who became one of the campaign's most quoted minor characters, reappearing in squad after squad regardless of how many times the Covenant appears to kill him. | Supporting Ally | UNSC | Rifle and assault rifle proficiency Marine infantry tactics Survival instinct in Covenant-heavy zones | Marine infantryman attached to the Chief's operations |
| Private Wallace Jenkins | UNSC Marine | The Marine whose squad is sent into the swamp facility ahead of the Chief and is overrun by the Flood. | Supporting Ally / Key Witness | UNSC | Reconnaissance patrol experience Helmet camera recording (posthumous evidence) | Missing Marine squad encountered during the Flood investigation |
| Major Antonio Silva | UNSC Officer | The Office of Naval Intelligence officer who takes command of the surviving Marine force on the ring and argues for holding Installation 04 rather than destroying it. | Supporting Character | UNSC (ONI) | Battalion-level command ONI operational authority Political manoeuvring inside the UNSC chain of command | ONI officer commanding the ring's Marine detachment |
| Lieutenant Melissa McKay | UNSC Officer | Silva's second-in-command, a competent and increasingly conflicted officer caught between her commander's ambition and the reality of what the ring actually is. | Supporting Character | UNSC | Company-level tactical command Logistics and evacuation coordination Marine infantry leadership | Executive officer to Major Silva on the ring |
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