Vassalians

The Vassalians are a little-known xenos race from the Eastern Fringe.

They are known to have been in war against the Donarathi up to the arrival of Hive Fleet Jormungandr to the galaxy.

Facing the Tyranid invasion, they accepted the uneasy truce proposed by High Admiral Vortigern Hanroth to join his loose alliance of various fleets with their Slavebirds.

In 995.M41, during the subsequent Battle of Black Nebula, Hanroth and his unlikely allies shattered Hive Fleet Jormungandr.