Remember that scowling blonde CIA agent in xXx: Return of Xander Cage? The grumpy one who tracked down a retired Xander Cage to find a powerful piece of technology? Jane Marke seemed like the stereotypical, tough-as-nails CIA agent, without any depth or nuance to her character. In fact, you might even have thought that the actress who played her was just a former model-turned-actress who…