The Rat Bastard

Eeeeviiiiil.

The one everyone loathes, and he feasts on that spite for him. He's fueled by hatred: the more people who hate him, the more power he gets from it. Of course, the Rat Bastard would do evil things intentionally; he does this because he wants to Watch It All Burn or he wants to be forever remembered for his infamy. The Rat Bastard is similar to the Villain but isn't always the main antagonist. If the Villain enjoys making people suffer and derives joy from it, then they're a Rat Bastard.

Sometimes, the Rat Bastard might get his comeuppance by having one of his schemes screw up and backfire horribly, damaging his wealth (as he's almost always rich) or business (as he's commonly an owner of at least one company). If things really go south for him, the Bastard might have some things get physically damaged, like having his home get blown up.

The Rat Bastard might be a CEO of one of Satan's Businesses just to show how evil corporate companies are. His employees will hate him, his little army of yes-men will be too scared to do anything else other than support him, and he's a being of Pure Evil who will do anything to get ahead in the marketing world.

Examples of the Rat Bastard
The Simpsons - Charles Montgomery Burns [Downplayed]. The richest man in Springfield, Mr. Monty Burns has come to be one of the most (if not the most) hated men (man?) in the town for his heinous acts that were mainly driven by money. He's a Downplayed Rat Bastard because in later seasons of The Simpsons, Mr. Burns loses his evilness and becomes just another Milionare.