| Description | Character | Race |
| Commander of the Forward Unto Dawn | |
| Smart AI of the Pillar of Autumn | |
| Spartan 117 | |
| Monitor of Installation 04 | |
| One of the Covenant leaders, killed by Spartan 117 | |
| Captain of the Pillar of Autumn | |
| Pilot of pelican Echo 419 | |
| Leader of the Flood | |
| | Description | Character | Race |
| Marine who recorded the discovery of the Flood | |
| One of the Covenant leaders, killed on the Arc | |
| Elite who failed to prevent the destruction of Installation 04 | |
| One of the Covenant leaders, killed by the Flood | |
| General of the UNSC | |
| Brute Chieftain | |
| Badass Sergeant who never dies | |
|