Fucking great shout, that.
1. Him (Papa Lazarou - might not be number one scariest but one of the all time greatest characters in tv I reckon)
2. Eugene Victor Tooms (Xfiles character that ate livers and squeezed through gaps; Fluke man was freaky too, but this one gave me nightmares as a kid)
3. Bob (Twin Peaks)
3. Girl that crawls out the tv in The Ring (Japanese original)
4. Pennywise out of IT (tv version)
5. Marlo Stanfield from the Wire
6. Possessed demon girl in the Exorcist
7. Crack Fox (Mighty Boosh - "I'm gonna make you wear a little dress and hurt you")
8. Ramsay Bolton
9. Aussie murderer bloke out of Wolf Creek
10.Hannibal Lecter (could be any out of Cox, Hopkins or Mikkelsen, for different reasons)