Hmm...
New character idea: just off the top of my head.
Simply put, it's a young guy who always wears a gas-mask and combat fatigues, though not usually body armor; his name is Jack, and he's the town's resident wanderer. He wanders the wastelands, finding interesting things and occassionally popping back into town to show off his latest baubles (for example, an irradiated yo-yo that glows in the dark). He's a pretty good friend of Cuddles and Steve (Steve's second face seems to get the impression that Jack is looking at him funny, but he can't prove it due to the ever-present gas-mask), but Gladys hates him by association with Steve and Cuddles, by his attitude (very cocky and excitable), and because his "house" is, by far, the most unbelievably trashed, dilapidated, and wrecked building in the entirety of Apocalypse Lane. However, underneath his house is his real home- a modified fallout bunker where his parents, some of the last un-mutated individuals in the area, lived and gave birth to him.
That's right- he's the only non-mutant in the whole town.
Reverend Hicky puts up with him, despite Jack's refusal to believe in the Rooster, and Stinky finds his puppy-like "hey, look at what I found in the irradiated military base, go ahead and touch, the zombies didn't have it for very long anyways" kind of attitude rather annoying.
The gay ghoul (I forgot his name, I'm afraid) doesn't mind him too much, although he's noticed the rather nervous posture Jack takes when around him (the ghoul says it's homophobia, but jack says, "I've got no problem with gay people, but I don't trust anyone whose arm is falling off."), and the giant worm.... THING is cool with him, but insistent that he get around to fixing the damn house.