For Dullahan, use high luck and high HP classes like the Pure Mage and Protector. That severely reduces the chance that Charon will instantly down a character by a lot. You should have at least 2 characters who can revive alive at all times and at least one person who can use Wish alive as well. PP restoring equipment, like stuff made from Mythril is great for your healers, although you can substitute with Psy Crystals. Switch anyone who gets Djinn Storm'd ASAP, squishier characters are a priority.J03bot said:Dullahan in Golden Sun 2. Fucker regenerated all of his psy points every turn, about 200 health, and had an attack that would kill 3/4 of your party every time he used it. Oh, and he could take away all of your djinn every time he got bored.
Doom Dragon, same game. Still had the djinn removal thing, and had a truly monstrous amount of health. Took about 2 hours to beat, most of that time spent healing my party...