A while back I was reminded of a olds 90 anime called Luna Varga.
Those who haven't heard of it, its a typical swords and sorcery anime with the catch that the main heroine can summon Godzilla out of her ass. Literally... as in her butt become the demon Varga (Who is pretty much Godzilla in design) with her rear and Legs merging into Varga's head so that she becomes its 'brain'.
As I recalled it, the pun became obvious. Hence a pony 'Luna Varga'
Art done by the talented Lauren Allen at LCTC2017. lunakai.tumblr.com/