That is true. On the other hand, who else could be the Serial Killer other than Kratos? I mean, I've never played any God of War game (don't worry, I plan to get the trilogy soon, shame on me for getting it so late, though) but I do know that he pretty mich kills every god, right? So it would be only natural that he is the SK. Call me paranoid, but I just don't trust hatmoza so easily.
Ares could be the serial killer. He destroys a whole bunch of cities.
Now, I'm finding it a little hard to keep up with this. Is Patapon Kratos, or is Hatmoza?