Most Fearsome Mythological Beast?

[The Atrocity Exhibition]

So I was thinking about this earlier, but which mythological creatures do you think are/would be the most frightening?

When I first contemplated this, I would have said the Fire Giants, Jormungandr, and Fenrir. But after a little more thought, I would have to go with either the Minotaur or the Gorgons.  

[Ichengo Angelus]

ugh, Noes.

With Minotaurs it would depend on which myth your referring too.
There is the Original one which a bull or ox head on a human's body, Then there is the extremely giant one that is trapped in a dungeon in whiich betrayers of a kingdom are thrown into and the minotaur chases them around the dungeon maze killing them. 0.0