Heros and Villans
Have to be the various iterations of Dr Who and his /her protagonists. In the early days I used to hide behind the settee when the Daleks or Cybermen came on the screen.

The first Dr Who was played by William Hartnell. I have had the privilege of watching almost all of them, (different actors have played him/her over the years. That is except when I didn’t have a TV in the 1980s. Of the modern villains I have to say I think the weeping angels (silent, only move if you close your eyes, creep up on you) were one of the scariest. I like it because of its English Charm. Which other country would have an alien traveling in a police call box, (a phone box for police). Bigger on the inside and travelling through time and space, THE TARDIS. My favourite!