"Excellent"

The first thing to come to mind when it comes to monsters and money is none other than C. Montgomery Burns of the Simpsons. And how could any other take his place? Whether it be a plan to literally block out the sun from the inhabitants of Springfield in order to increase dependency on his nuclear power plant or the numerous bribes he has paid to safety inspectors so that his dangerous practices go unreported, Mr. Burns' mission in life is simply in the interest of wealth. This is supported by his disregard for the consequences of his actions, either through releasing attack dogs on any visitors who stay past their welcome to an entire wardrobe collected from the remains of endangered animals, it is easy to see why Mr. Burns could be seen as a truly monstrous character, and that barely touches on his antisocial behavior. 

Yet, despite the horribleness of the man, despite the crimes he has committed, I cannot find it in myself to consider him a monster. I think the root of this comes back to the fifth season of the show, in an episode titled Rosebud. In it, Mr. Burns desperately searches for his childhood teddy bear, Bobo, which he lost in the snow when he was young. The show takes a detour to show the bear in the hands of several famous or infamous names, including Charles Lindbergh, Adolf Hitler, and even aboard the USS Nautilus as it traveled for the North Pole, before ending in the hands of one Maggie Simpson in Springfield. After negotiations with the Simpson family over the bears fail, as well as begging, Mr. Burns goes to talk to Maggie. Realizing that Maggie cares for Bobo, he asks that Maggie look after the bear, at which point Maggie gives Montgomery the bear, and we see this: 

Despite all of the horrible things Mr. Burns has done in his many years of life, I cannot call the man a monster. His love of his teddy bear just seems too human for that.