Grindylow

A lot faster than a normal unpowered person,
Seemed to change to a different form, growing larger and thinner to fight against Horn Lord.
Doesn't seem to have a human intelligence, instead relying on some sort of vicious animal cunning.
Doesn't really fight with any skill or training, and instead relies on instinct to be able to fight.
Even though he looks thin and scrawny, he's able to take a blow a lot better than you would expect.
Tall and lanky with greyed skin, covered in scars.
Do NOT fight him in hand to hand unless you have some sort of power to protect you.  He can open up his chest as some sort of fucked up mouth to eat people.
'Possible Master effect when you're being pulled into the mouth, makes it harder to see and hear, possible hallucinations as well.'