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Horrifying. The idea is that the player goes through the game, once in a while crossing paths with a merchant-type character who wears lots of thick robes and sells CREEPY THINGS. When the player gets to the final boss stage, who should be there but THE MERCHANT who throws off her robes and unfurls into this beastie! She's made out of childrens' body parts stacked on top of one another, and she can use her giant scissors to both slice up children and stab at our poor hero. Like I said, horrifying.
So then we worked on our models in 3DsMax:
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And now ZBrush:
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There you have it!
PS I beat Shadow of the Colossus today! Killer!