Welp, time to grind to 99 on all characters in FF9. Grand Dragons will be getting murdered left and right. Most people suggest Yans, but they're too risky. Their Comet can do anything from scratch damage to 1-shot damage, and they spam it. All it takes is a group of 3 with RNG deciding those Comets will be 1-shots, and you're done. Not to mention they use Virus, which removes your rewards from battle on the character.

And thus why the Grand Dragons are the victims. They only have a melee, Venom, and Thundaga. 2 of those can be completely invalidated with Antibody and Coral Rings, and they're level 60, making them weak to Level 5 Death. They are quick, easy, and there's no danger of a wipe.