It first appears as a boss in the "You're Not Alone" segment in Castle Pandemonium. Quina and Steiner are the initial fighters until Zidane joins them. It later appears as a random encounter inside Pandemonium.
Abadon can inflict Virus on a character with its Virus Fly attack, so it is recommended to bring plenty of Vaccines to counter this. High Wind is the only real attack to worry about, as it deals moderate physical damage to the entire party, and cannot be reduced or absorbed by Wind as Thundaga can with corresponding absorb Lightning equipment.
Equipping Bug Killer along with Wind-elemental weapons makes dealing with this enemy easy, and can be defeated even more quickly if Quina has access to the Twister spell.
[view·edit·purge]The Hebrew term abaddon appears in the Bible as a place of destruction and an angel, respectively. In the Hebrew Bible, abaddon is used with reference to a bottomless pit, often appearing alongside the place שאול (sheol), meaning the land of the dead.