Wow
Thanks for posting those pics.
IMHO, very Orang-like in appearance. Probably the best educated guess the scientists and artist(s) could manage, since the fossil collection for these animals is so small. He looks bow-legged (the statue, not Huntfish

) for being a dedicated biped. The feet also stike me as being a tree-dweller's/clasping kind of feet. Probably more of the Orang influence the artist used.
I've read that the belief/theory is that Giganto was a quadraped. Is this based on any evidence, or is it also an educated guess?