Some actors are household names. Others are in your house a lot, but 당신 might not know their name – yet! One name that 당신 should learn is William Mark McCullough because this guy is everywhere.

This season alone, William has appeared in a slew of 텔레비전 shows. He was a villainous outlaw in the old west on NBC’s “Quantum Leap,” a prisoner suspected of murder in Spectrum’s “Panhandle,” and a threatening redneck on Netfilx’s “Cobra Kai.”

Most recently, he brought portrayed a Joe Exotic-type into your living room during the "No Pressure No Diamonds" episode of the 여우 series...