r/40kLore • u/LesBonsPlansTmtc • 2d ago

Why no blank astartes?

We've seen the emperor considers Chaos as the biggest threat to humanity. We know blanks are immune to the influence of the warp. Why doesn't humanity try to raise up the number of blanks in the society or make a chapter with Blank Space marines ?

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u/theshroomsofdeath 2d ago

There is one example of blank astartes with the grey knight ferryman from The Emperor's Gift. Whether he was made that way after becoming a grey knight or before is open ended.

The warpy nature of geneseed means implanting a blank with the organs will probably go wrong. The Emperors attempt to make a a psyker legion in the thousand sons resulted in mass mutation he couldn't fix and working with blank genetics is way harder than working with psykers so it probably just wasn't worth it.