Aatrox is a half human half darkin

I mean look at the way he looks compared full darkin rhaast. We see that varus is the combination of a human and a darkin who willing gave his body to the darkin and he isnt this organic demonic looking suit of armor that Rhaast looks like. Rhaast is theoretically what a full darkin would look like if he engulfed its host in my opinion.

So this leads me to believe that the person weilding aatrox possibly allowed himself to let aatrox take control of his body. I mean his sword wouldnt dance by itself if they were the same being.

head cannon op. I just really enjoy the darkins for some reason. Rito please expound on the lore for these guys.