love it when the canon is so vague they can just make stuff up as they go
ultimate get out of jail free card to just do whatever
inb4 (you see actually it's a warp duplicator, a shapeshifter demon that is forced to show imperfections to victims)
Games Workshop made a statement after fans saw a Space Marine with an extra finger in new Warhammer art and thought AI was used.
The company explained it:
"Does that Space Marine have an extra finger? Yes, but it is not AI or early signs of mutation among the Traitor Legions.
So please go easy on our artists. They are only and completely human."