Furrball is a young, blue male cat with a hole on his right ear and a bandage on his tail. Furrball lives in a cardboard box in the back alleys and is usually scrounging about on the streets where he is most often a comic victim. Furrball is commonly portrayed as an archetype scaredy cat, though he has the potential to be brave and tough when needed to be. Furrball has a heart of gold, doing things for others he would not usually do and choosing to make friends out of enemies when he can. Although several appearances compare him to Sylvester, there are a few cartoons that cast him in a more sympathetic light. Furrball spends much of his time trying unsuccessfully to eat Sweetie and Li'l Sneezer (to no success). As the intro suggests, Furrball is prone to misfortune ("unlucky" in the intro). Some of his other misadventures include getting a pair of malfunctioning 3-D glasses glued to his head, being hypnotized into trying to eat Arnold the Pit Bull for supper, dealing with his dog bully next door, becoming the host of a family of singing Italian fleas and being the love-interest of an amorous Fifi La Fume after involuntarily winding up with a white stripe down his back. The diversity of these adventures and his reactions to them have established Furrball as one of the most versatile characters on the show as well as the most Unlucky.

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