Having 999 HP, 999 MP, a speed of 50, a physical attack of 99, and a magic attack of 99 seems like you'd have to use a Gameshark or the related in order to have. It turns out that it's entirely possible to have such stats without cheating, rather, exploiting a weakness/design flaw in the game. You've seen the basics for stat-raising, now I'll strap a rocket to the process and fire it off. I'll show you the fastest method I'm aware of, for both basic stat raising and the case of when the stat-raiser is a mime. Unseen in the video is the disabling of messages, effects, and the displaying of gained exp and JP. Phase 1 goes from taking an hour to just 40 minutes. Phase 2 goes from taking 2 hours to taking just 1 (and opens up the possibility of getting 50+ levels within 10 minutes). (less info)