Door

Doors are movable barriers used to cover up openings; typically, such barriers are attached to the very openings they block. They are used by virtually all factions in the Halo universe.

Appearances

Below is a list of the various door shapes and colors seen in the Halo games.

Halo: Combat Evolved

• Pillar of Autumn: Two-part human-made doors.

• Halo: N/A

• The Truth and Reconciliation: Two-part Covenant doors.

• The Silent Cartographer: Triangular, tri-segmented Forerunner doors.

• Assault on the Control Room: Triangular, tri-segmented Forerunner doors.

• 343 Guilty Spark: Triangular, tri-segmented Forerunner doors.

• The Library: Massive Forerunner security doors. Several smaller types.

• Two Betrayals: Triangular, tri-segmented Forerunner doors.

• Keyes: Two-part Covenant doors.

• The Maw: Similar as in The Pillar of Autumn.

Halo 2

• Cairo Station: High-tech automatic doors with a light indicating their status.

• Outskirts: Un-passable grey doors with yellow upside down triangles. Large doors in the highway tunnel.

• Metropolis: Similar doors as in Outskirts. Several other metropolitan type doors.

• The Arbiter: Rectangular Forerunner doors with a blue square in the middle.

• The Oracle: Similar doors as in The Arbiter.

• Delta Halo: Doors with an oval eye.

• Regret: Same doors as Delta Halo.

• Sacred Icon: Forerunner Pistons.

• Quarantine Zone: Large Forerunner vehicle doors containing multiple segments which spin 90° and retract upwards.

• Gravemind: Multi-layered Covenant doors.

• Uprising (level): Triangular Forerunner doors.

• High Charity: Similar doors as in Gravemind (level)

• The Great Journey: Same as Uprising (Level)

Halo 3

• Sierra 117: N/A

• Crow's Nest: Heavy bunker-style doors, which are opened with door control buttons, remarked by a marine as being "old tech", as the base was built in the 21st century.

• Tsavo Highway: Large bunker doors of Crow's Nest, highway doors.

• The Storm: Various futuristic factory complex doors, most openable with a button.

• Floodgate: Same as in The Storm.

• The Ark: Triangular, tri-segmented Forerunner doors.

• The Covenant: Triangular, tri-segmented Forerunner doors.

• Cortana: Flood Portas -- large, sphincter-like orifices.

• Halo: Triangular, tri-segmented Forerunner doors.

Trivia

• The object John-117 rode to Earth in the beginning of Halo 3 is apparently a some sort of Forerunner door, part of the Forerunner Dreadnought.