>>13415934Mega Mewtwo exists because Game Freak thought Mewtwo would be the best Pokemon to spear head their new Mega Evolutions. And no the first legendary egg belongs to Phione and Heatran. Arcues also can create an Egg of the Sinnoh Dragon Trio. However a man made Pokemon is not coming in an egg
You also don't seem to understand what I mean by one of a kind Pokemon. You can only find Mewtwo in one location in one generation Gen I, the Mewtwo in Gen II is the same Mewtwo from Gen I.
You can only find one Mew in Gen III and no other generations
You can only find one Darkrai in Gen III and no other generations, these are one of a kind Pokemon.
You can get a Kyogre in Gen III and you can find a completely different one in Gen IV
You can find the Regi Trio in Gen III, IV and V these are all different Regi's.
These are not one of a kind Pokemon
Like I said everything regarding Mewtwo creation is gone, even if "plans" still existed you would need Mew's DNA which is nigh impossible to obtain