Grigori, commonly known as Watchers, are fallen angels from the Writer God that rebelled against him and were struck down from the Writer God's grace. Most of them serve The Imperium as spies due to their reputation for watchfulness.
Main article: Gadreel
Gadreel is a Watcher who is solitary yet surprisingly adept at the art of conversation and wit. He enjoys stupefying people with half-truths[Tales 1]. He serves Ameryl Hypericum (alternate) directly within The Imperium.