Whats the complete story of how mew and Mewtwo were formed and why they battled?

Answer 1

If I heard it right, then it goes something like this. Team Rocet found DNA of a Mew. They gave the DNA to some scientist to clone into an even stronger Pokemon than ever. The scientist wants to clone his daughter as well. Mewtwo and girl talk, and become friends, but they lose the girl, and this scars mewtwo. But that's only in the Japanese version. When Mewtwo is wakes up, he finds out that he'll be experimented on and stuff, and that he's a clone of a Pokemon named mew. Not liking what he was hearing, he blows up the lab. The leader of team rocet shows up and asks mewtwo to join him, which mewtwo agrees to. Time passes, and soon mewtwo finds out that the leader of team rocet was only using him, he gets mad, blows up the head quarter, and flies away. He lands on the island where the lab was, and starts plotting the downfall of man kind.

He then invites the strongest trainers to his island. He makes a storm to keep the weak trainers away. He battles three trainers with three cloned Pokemon, when he wins, he steals all the Pokemon and clones them. He then explains that the storm will wipe out all life on earth, including Pokemon, and his clones will take over. Mew shows up out of no where. Mewtwo recognizes that it's mew and attacks, to show that it's stronger. Mew doesn't fight back at first, and just plays arround. But when it gets hit by an attack, it fights back. Mewtwo states that the regular Pokemon and cloned Pokemon shall battle to the death to show who is stronger, the clones or the original.