Dark Project: Try to guess the model

Dark Project: Try to guess the model

I'm working on a unit (not a request), a HUUUUUUUGE unit. Try to guess:

1st hint: This is a Xenos
2nd hint: He's is frightening
3rd hint: he belongs to one of the univers of GW (hehe, only fans will undertsand it)

The answer is...
The model will come very soon (less than a week, if all is fine)

Iknow it, iknow it!
Hehehehe!
But i wont tell cause burning wil kill me!

Ok.... nobody find. Nor answer. It was the Carnifex!!!!!!!