Board Thread:Warhammer 40k General Discussion/@comment-7186329-20130329201743/@comment-176.26.7.149-20130416070223

I believe they were native to the milky way but when the "enslavers" appeared out of the warp the Old Ones were forced to flee the galaxy... their technology was far beyond any of the races now so perhaps they made it to another galaxy and "created" the tyranids there?