When I think of that "fudster" I think of an animal that has more of his characteristics and personality.
It is an animal that spreads germs and disease and destroys it's surroundings.It's a secretive animal lurking in the shadows feeding on carrion and even that which is crippled but not dead yet.
It's an animal that is destructive by itself but also moves in packs.
It's an animal,that,around people ,spreads fear,uncertainty and doubts.
It's an animal that takes advantage of others for its own gain .
It's an animal that,unchecked,will breed and grow out of control.

There is only one animal that comes to mind when I think of that evil person.

That animal is the common RAT.
I think RATSCAT is more descriptive.

Kelt