Vex

Described as "time-traveling robots" by Bungie at their reveal, the Vex are an alien species that inhabit Venus. Their body consists of a copper looking metal, and a single glowing red eye.

A huge structure on this world named the Citadel acts as stronghold for the Vex.

In the Bungie Mail Sack of March 2, 2013, the Vex were described as having a "fascinating" fiction behind them, "which, in turn, creates one of the coolest deaths in the game". During a panel at the 2013 Game Developers' Conference, Joe Staten revealed that this death appears as a massive beam of light escaping from a dying Vex's mouth, designed to evoke the feeling of the dying Vex's soul being "ripped out of its body."

The Vex are speculated to live on the planet Venus.