Zomby!!! seems to watch a lot of TV while standing up in the middle of his unfurnished living room. I mean, isn't it weird that he has his TV facing the wall and not, say, a chair of some sort? In other cartoons, we've clearly established that he has at least one TV-watching chair. Maybe he's some kind of crazy shut-in with TVs all over his house, and the one we're seeing is just the one he keeps in the hall so he can watch television on his way to the kitchen or the bathroom.
"And Mr. Green, he's so serene
He's got a TV in every room."
- THE MONKEES, "Pleasant Valley Sunday."
I guess Zomby!!! is Mr. Gangrene.