Breaking Bad is widely considered to be one of the greatest series to ever grace our televisions.
Each season only got better and better. The stakes only got higher, the deaths only got more heartbreaking, and walls only got tighter. It gave us a world of drug lords and crime bosses, each looking to carve out an existence -- and, just maybe, an empire -- for themselves under the harsh New Mexico sun.
The prequel/sequel series, Better Call Saul, has thus far failed to grasp the zeitgeist in the way that Breaking Bad did, but its critical praise has matched -- if not exceeded -- that of its predecessor. A much slower, more deliberate show, Better Call Saul is more concerned with a man trying to find his place in a legitimate business, when everything about him grates against that legitimacy. This conflict brings increasingly questionable characters to his doorstep.
Breaking Bad and Better Call Saul are full of villains. Very few people in either series are good. You could argue -- rightly -- that Walt is the greatest villain in either show, but we're not doing that. We're looking at people that have stood in the way of our protagonists' goals, no matter how morally reprehensible the goals might be.
That said, don't expect to see Hank on this list, either. That man is no villain. A nuisance, sure, but he's not a foe. He's a good man. We're looking bad and morally-questionable people.