Archfey are powerful lords of the Faerie, within the realm, they command nearly godlike power, through the fey crossings their influence spreads out to the material world.
The archfey only command their epic power while within the raw magics that flood the Faerie, within the material plane they must keep a piece of the Faerie to maintain their strength, and the Umbral is deadly to them. The archfey spread their influence outside the Faerie through warlocks they empower or lesser fey they command.
Some of the archfey are the few creatures who predate the breaking, but thanks to the effect of the breaking, the Faerie was shaken in a great aurora and their memories were lost.