Angels Vermillion
The Angels Vermillion is a second founding chapter of the Blood Angels and one of the oldest chapters in the Imperium alongside it's brother chapters from the original legion.
Unlike its brother chapters who have maintained close ties with each other and their parent chapter, the Angel Vermillion are aloof snooty bastards who prefer to keep to themselves, whether it be from marines and non-marines. This is because every 50 years or so the chapter steals away mortals during the time called "The Sorrowing", where they render the kidnapped people unconscious, and place them in specially-prepared body bags in their Chapter monastery - "The Bloodspike". They would then exsanguinate the doomed mortals, draining them of blood completely and methodically, on specially prepared conveyor belts with special machines built to extract blood.
The Sorrowing is the chapter's solution for the Red Thirst, as they gather so much blood to drink that it lasts them until the next harvest. This is the reason for their secrecy. Only the Blood Angels know of the true modus operandi of Angels Vermillion.
Like most second founding chapters, they have had almost no fluff on them, until recently, with the release of the book "Dante" by Guy Haley.