What was the name of the scientist who defected and built the spider mecha with the sparkly sky spider-web and tried to use patch-cam to photograph the SNT? In BotP he was "Dr Strecker" (and he was voiced by Alan Young which was just creepy) but damned if I can remember his name from Gatch. A google search returns "Doctor Demon," but somehow that just doesn't sound right. Anyone?

Yup, Dr Demon is correct, according to the episode reviews on GFF.