Flayed Ones

Flayed Ones are Necrons who go about wearing the bloody flesh of their victims. Flayed Ones are getting their fashion tips from Chaos victims of the Flayer virus, a program error where they develop a desire to reclaim their flesh and blood existence. It's the end result of the C'Tan know as Llandu'gor the Flayer, who was sharded so hard that he cursed the Necrons to suffer the Flayer virus as a last "fuck you". Flayed Ones are basically the Lepers of Necron society, feared and ostracized for their disease. Although instead of sending them to a Leper colony, the Necrons simply try to kill them to prevent the spread of infection. That's disease control in Warhammer 40,000 for you.