I did check the new model on front site and the guy looks like a old kratos from god of war game. Very very close resemblence. Scars everywhere, white skin, braces and belt look very close.
Well only difrence is that it looks like a old and bulky kratos.
Some other picture with more armor:
It is quite posible that he was a banished titan and he got imprisoned here (like when kratos gets killed and he is stuck in hell).