Jonathan Teatime

Jonathan Teatime is the main antagonist of Hogfather, the twentieth of Terry Pratchett's Discworld fantasy novel series. He is an assassin for the Ankh-Morpork Assassins' Guild who attempted to kill the Hogfather for good by controlling all human belief.

In the made-for-TV movie, he is played by Marc Warren, who also played Gentleman with the Thistledown Hair.

About
Teatime is also quite insistent on having his name pronounced as "tee-ah-tim-eh" and gets irritated when people call it 'the thing you have at 4 in the afternoon'. Teatime appears to be a pleasant, eccentric young man most of the time. As the story goes on, however, his cheerful exterior is revealed to be just a mask to hide his true self- a sick, sadistic monster who kills indiscriminately and murders anyone helping him as soon as they've outlived their usefulness. If anyone stops helping him, he kills them without a second thought. Teatime is a special case in that he sees nothing wrong with killing people, finding it similar to simply holding an amiable conversation. However, his wanton murder and his cheerfully murderous persona serve to codify him as one of Discworld's more heinous villains.