The chicken nugget is a repaint, and because it's half-sized, the fry-guy is just a spider, with shredded paper hair. Wouldn't want the former Doop to get lonely, would we?
The story on them is simple. When Birdey had eaten 1 hamburger, and some chicken nuggets, she wanted more nuggets, and took her second hamburger with her back into the kitchen. She slipped, fell face first into the fryer, adn droppped the contaminated burger in also. Later that night, the Chicken Nugget crawled out of the fryer, apparently the result of spontanious generation. It has no mind, and little mobility. The fry guys, however, are the result of an unfortunate spider falling into the same tainted oil, dying almost instatly and being reborn in the form shown.