>>38693337Psaro the Manslayer, from Dragon Quest IV.
>both have a second face on their chests>both have a single spike on each knee that only emerges at the end of their evolution>Mega Tyranitar's sideways-pointing spikes seem to resemble Psaro's carapace>the process of Mega Evolution is very similar to the Secret of Evolution, which is what empowered PsaroEven if it's all just a bunch of coincidences I think it's really neat. Only reason why it loses out to Mega Aerodactyl is because Aerodactyl was usable in my first Y run and its design reminds me of Monster Hunter, another game I really enjoyed.
I'm more basic than lithium hydroxide so I'm a sucker for shout-outs and references. 