[GrrDraxin]

Seems our boy Ikeda favors some of the Fist of the North Star and perhaps some other martial arts goriness from some other anime/manga in the same vein. I've seen things like that, but Elfen Lied depicts that move best, I think. Heck, she probably did it in a similar way too, looking as her fingers were protruding from his skull while it was still intact for a second before his brains started to leak out. Though I think if the Diclonus and the Vampires were to go head to head, the vampires would lose. They don't have ranged attacks like Lucy and the others do.