[T]hey didn’t exactly hire a UFC fighter to do the motion capture for Kratos. Instead, they turned to a YouTuber who had been, for fun, making videos where he recreates moves from fighting video games – Eric Jacobus.
Bruno Velasquez, the game’s principal animator, had seen Jacobus on YouTube years back, saw him recreating moves from Street Fighter and Tekken, and said, “That guy needs to be our Kratos. Like he’s Kratos. Look at his moves. Look at how he’s flying and doing Superman punches!”
So they pretty much just sent the guy a message on YouTube …
While the actor Chris Judge plays the voice of Kratos and does all the cinematics, it’s Jacobus’ moves you’ll see doing the occasional chokehold and unleashing a fury of fists on one of the game’s unlucky foes.