>>45905601unlike mew/mewtwo, it isn't a natural being or even a clone. in fact, it doesn't even technically exist - it's just a concept. however, through the beleif of all the playground rumours and "my dad works at nintendo", it willed itself into existence, borrowing elements from mew and mewtwo to give itself physical form. it'd probably have some equally ridiculous method of obtaining it, too, to double down on the playground-rumour-but-real theme
however, because it only exists through whimsical belief and disbelief, its very existence is self-destructive - when it becomes public knowledge, as all mythicals/etc eventually do (usually long before their official reveal), it can no longer tap into its life force, and as such, it only appears in one mainline game (alternatively, it could be patched out via an update, but that would fucking suck)