I have to give this one to Caleb. There's just that creepy vibe about him. And he had that sinister smile everytime he was about to do something really, really awful. Brr! I find that way scarier that the Turok Han's growls. lol
Plus, he actually had a motivation for his actions. He chose to be evil, because of all his hatred (especially towards women) and his twisted view on the world. He was striving for power and stopped at nothing to achieve his goals. While the Turok Han were just like some wild animals, who attacked without having an actual purpose.
And let's not forget about the little mind tricks. Like when he was in the car with that potential, acting all nice and making her feel safe and, then, out of the blue, he pulls an 180!
So, yeah, in case I haven't made myself clear: Caleb. :whistle:
P.S. He was funnier as well. (sw)