Gatekeepers

  The Gatekeepers are an Imperial Fists successor chapter  and the leader of the five Astartes Chapters that make up the Fire Warders tasked to defend the Imperium against Chaos incursions from the Gates of Fire in the Segmentum Solar.

Founding
The Gatekeeper Chapter's original name was the Golden Castellans. They were founded from Imperial Fist gene-seed sometime in the 33rd Millenia and established as a garrison force in the Gathalamor sector which put them conveniently close to the action when the First Fire Crusade erupted from the Gates.

Favored Weapons/Tactics
Like their parent chapter the Gatekeepers are masters of defensive warfare. Their homeworld, Pylos, is an impenetrable fortress designed and built by the greatest experts to be found among the sons of Dorn.

Allies
The Gatekeepers are the leading chapter of the Fire Warders. Relations between them and the other four have not always run smoothly but Peter Symeon has proved himself a tactful over-all commander with a healthy respect for the talents and opinions of his fellow chapter masters. The Fire Warders are: