Halo 3 Guide
Master Chief with Cortana’s hologram in Halo 3, shown in a publisher screenshot from The Master Chief Collection on PC.
Xbox 360 / MCC · 2007 · 6 guides & references
Cheats, locations & unlocks
Key characters
Player one
Master Chief / John-117
The Spartan protagonist returns to Earth and pursues the Covenant threat. His shields, weapons and equipment define the campaign’s combat.
Elite ally
The Arbiter / Thel ’Vadam
The Arbiter fights alongside humanity after the Covenant’s split. He accompanies Chief and is controlled by player two in campaign co-op.
Artificial intelligence
Cortana
Chief’s missing AI companion is central to the campaign’s rescue mission and the struggle against the Flood.
UNSC ally
Sergeant Avery Johnson
Johnson helps recover Chief at the beginning and supports operations across the campaign.
Artwork & pictures
Image gallery