Blood Wyverns

The Blood Wyverns are a Chaos Warband in the service of Chaos Undivided, formerly a Loyalist Chapter of the cursed 21st Founding going by the same name, they presumably come from the gene-stock of Roboute Guilliman, though this remains unconfirmed.

Despite the fact there were no physical or mental defects with this Chapter, the fear and suspicion of the Imperium had caused them to go rouge when the Blood Wyverns had come to blows with an Inquisitorial Taskforce during a campaign against the Tyranids in which the Blood Wyverns had attempted to prevent the Exterminatus of a world while Imperial citizens and soldiers were still evacuating, going so far as to engage the Inquisitorial Taskforce in combat.

This had led to them being declared Excommunicate Traitoris by the Imperium, and was folllowed subsequently by their Homeworld of Hades coming under assault from Imperial forces, most notoriously Astartes from the Minotaurs and Marines Malevolent. Eventually it ended with the Death World of Hades being virus-bombed from orbit, destroying the planet and all of its inhabitants, including the 3rd and 7th Companies of the Blood Wyverns.

Making their retreat to the farthest edges of Segmentum Pacificus, the Blood Wyverns soon turned to Chaos, however the Warband prefers to keep Chaos at arm's length. They did not worship the Chaos Gods but they did acknowledge them. In addition to this, the Blood Wyverns never associated themselves with other Warbands, preferring to keep to themselves.

Ever since then they have stuck to the borders of Segmentum Pacificus, battling Xenos and Imperials alike, however only engaging the Imperials when necessary as they saw themselves as still loyal to the Imperium, but not to the False Emperor who had forsakened them.