Mewtwo is just epic. Epic quotes, epic power, epic design, he's just epic. --- I'm not easily impressed; I'm usually oblivious to whatever's in front of me. Stunfisk is the epitome of monstrous majestic legendary creatures that spew fire.
To be honest, I don't think the first movie has aged as well as some of the later ones; that being said, I think Mewtwo pretty much saves it from being among the worst entries. If I had to make a comparison, he's to the Pokémon movies what Max Zorin (from A View To A Kill) was to the James Bond movies - an average at best movie with an excellent antagonist. --- "This is the strangest life I've ever known" - Jim Morrison