Nebilim

Nebilim is the name given to two distinct characters in the Tales series who appear as part difficult side-quests and whom eventually have to be fought.

In Tales of Symphonia
Nebilim is an evil king from ancient times who possesses Abyssion in order to retrieve nine cursed weapons known as the Devil's Arms.

In Tales of the Abyss
Gelda Nebilim is the name of Jade Curtis' late teacher. As part of a side-quest that involves collecting six catalyst weapons, the game's main characters are forced to fight a replica of her that was sealed away in Mt. Roneal.