9. The Sewer Centipedes - Dark Souls III
Just... oh god, oh GOD, as if there was any need to create such a godawful concoction of limbs and nightmare fuel.
Seriously, these things (which I've since found out, are called 'Sewer Centipedes') look like drowned corpses when they're not 'active'. You spot them a mile off when exploring the depths of the Boreal Valley in Dark Souls III, but the second you get too close (or in my case, ping an arrow off their backs to be sure), they grow and expand in all directions.
Suddenly you've got a downright horrifying skeleton thingleaping and clawing after you like some overgrown face-hugger.
It's f*cking AWFUL.
"Kill it with fire!" has never been uttered so much in such a small space of time.