Enderman

*you were looking for an elytra, you just killed the enderdragon, and now you are determined to find one of those, endships after bridging over the void to another island, you see this "Enderman" wearing Armour, and holding a sword, seemingly fully self aware, it spots you on your bridge, looking at you from a distance, holding a sword, staring at you, not taking any chances, just watching*