Meltigemini is a boss in Final Fantasy IX, formed when Zorn and Thorn meld into one after being defeated by Eiko and Madeen after the twins' unsuccessful attempt to extract Eiko's eidolons. Kuja states that Meltigemini is their true form. Meltigemini is fought on Mount Gulug. It is a Demon-type enemy.
Freya should jump or perhaps use Reis's Wind. Eiko should heal with Cura, although she may be able to get in a quick summon attack with Fenrir. If the player has proceeded far enough in the chocobo sidequest Eiko could also use Holy. Dagger should focus on healing or attacking with her eidolons, although her unreliability at this time can make her a hindrance.
Other appearances Edit
The Worm Meltigemini from Final Fantasy IX appears as an enemy in Final Fantasy Record Keeper.