From "Transformers Unlimited"!

Aw yeah, Screw Head kicks all the butt, he got big ol' drills on his head & shoulders that look like screws, hence why they call him Screw Head. Sometimes he ventures in front of them Velocitronian Autobot Facilities & they be all like "What's that? Oh, just some Cybertronian race car with 2 screws in the front." and then the car will be like "TSCHE-CHU-CHU-CHU-TSCHE!" & they'll be like "Oh scrap! Screw Head!". Most other mercenaries be okay with Screw Head, giving him communication assignments and what not, but Screw Head can kick aft, take names, drill holes where no star shines, that's why they outta fear Screw Head.