Endymine Cordat

The Endymine Cordat were an alien that existed in the 40th Millennium.

Culture
The Endymine were a species that attempted to coexist with the belligerent Imperium of Man. To show their sincerity the aliens offered the Imperium technology capable of harming Daemons. The Imperium preferring to take what was not there's instead sent Deathwatch and shattered the Endymine Cordat civilization. The surviving Endymine Cordat, that escaped the genocide on fringe worlds devolved into a feral society and their gene pools depleted causing them to head towards extinction.