Villains who are infamous for their greed, whether it be for material wealth or some other tangible goal (with the exception of power since that is more fitting to a power hungry villain). These villains can be singled out by a hankering for what is inessential or more of what they already have much of.
Greedy villains simply cannot get enough and will always seek new ways to get more of their favored item (as well as keeping all of it for themselves) and keep it for themselves. They can also be very spoiled individuals. A particular example of a greedy villain is the gold digger, a person (most often a woman) who only dates or marroes a wealthy partner for the sole purpose of getting and exploiting that partner's money and resources.