Aero3, Scorpion's Tail
Immune to Status
Sleep, Return, Confusion, Silence, Transform, Berserk, Poison, Paralysis, Stone, Slowly Stone, Manipulate, Death
This boss is really tough, so be ready. Have your high-HP people in your party, and it also helps to have Aeris, for her curative limit break. Use items that do damage, like Swift Bolt, Fire Veil and Fire Fang; heal often. The best way to go is to heal someone every second or third turn, and hit him as hard as you can. If someone is downed, bring them back up as soon as possible.