Welcome to The Vex!

The Vex are an ancient cyborg species linked together and governed by Minds.

The Vex appeared on Venus from an unknown location by way of transfer gates that allow them to instantly warp through worlds and time.[1][2] All attempts to communicate with the Vex have failed, due to their single purpose to expand their species throughout the galaxy, commanded by Axis Minds that single-handedly control whole armies. Their bodies are made of an unknown metal alloy resembling hammered brass, yet they are not entirely mechanical; some organic materials are present as well. If they are decapitated, they will remain active and become more aggressive. Their routines and ceremonies remain mysterious and illogical to humans; they are hostile, unrelenting, and deadly. The Vex despise the Cabal as much as humanity and are constantly fighting them on Mars, keeping Cabal operations from expanding further into the system.

Bungie has described the Vex as having a "fascinating" fiction behind them, "which, in turn, creates one of the coolest deaths in the game."

The Vex have total control of Mercury and inhabit a massive stronghold on Venus humans call the Citadel. They also have a presence on Mars, and are the sole residents of the Black Garden.