The Imperial Sentinels are a 22nd Founding loyalist Space Marine chapter, active in the Segmentum Obscurus. A successor chapter of the Dark Angels, the Imperial Sentinels are known for having close ties with the Inquisition, more specifically the Ordo Hereticus. The chapters assocation with the Inqusistion is well known enough for many to regard them as little more than the Inqusistions lap dogs. indeed the Imperial Sentinels adhere both to the teachings of the Imperial Creed and their shadowy masters.