I love seeing more unique denizens and spheres of the hellish planes, this is going to be a fun thread to watch.
You could try some Carrion Crawlers, the ones made by Otherworld are delightfully annelidic.
http://www.ralparthaeurope.co.uk/17014-demon-duglum-p-1011.htmlThis guy has some promise to him, I think.
The Dark Age Games Brood Howler also looks like he might fit in.