Eye of Cthulhu

It doesn't speak, it only emits grunts and roars.
It also produces several eyes, only they are smaller.
If it escapes during the day, it only fights during the night.
Because it is an aggressive type of animal, it fears nothing and does not care about death.

It's a huge eye that measures 4 meters. It has 2 phases; in the first one it's slow and follows you slowly.
And in the second one, it bares its fangs, increases its speed, and rams you many times.