Board Thread:Warhammer 40k General Discussion/@comment-24490059-20150526190859/@comment-6078851-20150527151151

i would think it fairly unlikely. no-one knows if cypher is a traitor/chaos marine or a loyal marine, but i definitely haven't heard of him being an agent of the eldar.

does the black library have an agenda beyond keeping itself secret? it's essentially the most sectretive craftworld in existence dedicated to keeping all it's knowledge right there, and not allowing anyone, of any race not eldar, anywhere near.

personally i don't see any chance of cypher being an agent of/for the black library. as far as i know the only non-eldar who has ever been in the black library is ahriman.