Whoever you prefer...
As soon as you get more characters in the game, be sure to try them all out. The game plays much better (and is a whole lot more fun) if you play with who you are comfortable with. Are you an action-packed fighter? Try out Lloyd or Regal. Or are you much more fit to sit in the back and cast spells? Genis and Raine are the top choices here. It all comes down to how you like to play this game.
We have more cheats and tips for this game here, Tales of Symphonia cheats
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