winghead?...stabilizers?

I've never heard any explanation from Amber as to why the cubi in her comic have headwings, but you could certainly ask her (comic is at missmab.com).

She's in Project Future as well as DMFA (Dan and Mab's Furry Adventures). She's a succubus, so that's why she has headwings. I'll take my first attempt at tagging in a moment after i eat dinner.