The new characters are pretty interesting, too, expanding the world of Torchwood, which has become rather small by the time season four begins. Bill Pullman is expertly playing a psychopathic creep. It's Pullman as he's never been seen, gaunt and pale, with malice in his eyes. Every word exudes a sort of evil. While Pullman has played the hero in other projects, it is great fun to see him slither into such a bad man, and it will be intriguing how this killer's plot plays into the overall state of the world at large.
Rex Matheson is a hero, but a much more modern one than Jack. While Jack oozes with chivalry and old fashioned morality, Rex goes for the guns blazing method. Mekhi Phifer plays him with veiled intentions, and it is difficult to see whether Rex will be more of a help or hindrance to Gwen and Jack. He could go either way, and will likely be both at times. At the moment, Rex is much more concerned about saving his country than helping anyone else. His stubborn refusal to stay in a hospital bed proves he has great, noble qualities. But instead of asking Gwen for her help, he shows up with a gun, and has her and Jack forced to do what he wants. It's a very different type of character for Torchwood, and it is unknown how he will fit into the mix.
Esther Drummond is much more likeable. She is not the action type, at least from what has been seen of her so far, though she does get into it a little when Jack comes around. But she is clever and determined, which can be just as good. Hopefully, Esther will soon join the Torchwood team and assist them. She is wasted behind a desk, even as she continues to dig up secrets that will help, because she is kept separate and out of the loop. Though Havins is not a familiar face, she is surely already winning admiration for her portrayal of the bold woman.