No, I don't think KTTV / Channel 11 ever had an actual Horror Host (unless it was "before my time"). They did run sci-fi and monster movies on a program called "Chiller", which was pretty no-frills. The version I remember had a very simple opening, with stock lightning flashes, creepy music and sound fx over a solarized shot-on-video closeup of a monster mask floating in some dark water -- then a monster-gloved hand grabs the face and slowly pushes it under the water -- the solarized ripples in the water become the word "CHILLER". God, hadn't thought about that in years....! Does it ring a bell, O Pink One?