Original Dragon.
GameFreak are so piss scared of the sheer testosterone of such a poké-chaos god that they refuse to go anywhere past mentioning that he existed at one point, and was so unstable he had to split into three weaker but still immensely powerful rape dragons, probably out of the sheer fear that he'll come and rape them up the butt next if they ever give him a design capable of conveying how many virgin faggots and shitmon holes he conquers.