Remember the weeping angels from Doctor Who? They have made a return in Call of Duty Black Ops III in the more updated form of mannequins.
The Easter egg involves shooting the arms off all the static mannequins. Once that is done they will attack you, but only when you are not looking!
It’s a fun Easter egg however the main difficulty is actually getting the Nuk3town map, which until next spring is a GAME exclusive in the UK.