10 - Dr. Helen Magnus (Sanctuary, SyFy)

9 - Captain Jack Harkness (Torchwood, BBC America)

8 - Castiel (Supernatural, The CW)

7 - Tony Almeida, (24, Fox)

6 - Angela Petrelli, (Heroes, NBC)

5 - The Devil (Reaper, The CW)

4 - Christina Scofield (Prison Break, Fox)

3 - The Doctor (Doctor Who, SyFy)

2 - Richard Alpert (Lost, ABC)

1 - Walter Bishop (Fringe, Fox)

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Everybody loves a good mystery. Well maybe not everybody if the ratings for Harper's Island are any indication. But mysteries and suspense have been a part of television since it's inception. It's one thing for the plot to be full of mysteries. Things like "Who shot J.R.?" can become a part of popular culture. But J.R. himself wasn't a mystery, we knew him pretty well.

But there are those characters we don't know much about. Think about Benjamin Linus from Lost when he first appeared as Henry Gale among the Flight 815 survivors. There were so many secrets and mysteries surrounding him that we couldn't take our eyes off of him when he was on-screen. Well Ben's story may be more or less told, though something tells me there's still more to be gleaned, but there are plenty of familiar faces on television with not so familiar back-stories. And while Ben didn't make the list, that doesn't mean Lost went unrepresented.

If you just want the list, click here.