A thug who worked for Oily. Sludge knew how to drive a tanker truck and siphoned fuel from a local refinery pipeline when he caught Dick Tracy and Lizz Worthington sneaking around and captured them inside his truck’s tank. While taking them back to Oily, a lunatic named Don Quick Oatie attacked his truck, cutting the brake line. The vehicle crashed into an auto garage and Dick and Lizz escaped inside while Sludge called his boss who brought the gang. When the garage caught fire and collapsed, Sludge was never mentioned again and is presumed to have been killed.