Jack Valentine
Jack Valentine is one of Interpol's most successful agents. A ruggedly handsome Canadian in his mid-thirties, he is quite gung-ho for a cop. He had a perfect clean-up record till he was assigned to investigate the Vixen. His inability to catch her, and the fact that she has started taunting him, has caused him to develop an Inspector Javert level obsession with catching her. If this was a movie, there would be vast amounts of unresolved sexual tension between Jack and Vixen, even if he doesn't know who she is.