The following fiends can be unlocked by capturing all of the fiends in a particular zone as identified below.
Stratoavis
Unlocked by capturing all of the fiends in Besaid.
Malboro Menace
Unlocked by capturing all of the fiends in Kilika.
Kottos
Unlocked by capturing all of the fiends along the Miāihen Highroad.
Coeurlregina
Unlocked by capturing all of the fiends along the Mushroom Rock Road.
Jormungand
Unlocked by capturing all of the fiends along the Djose Road.
Cactuar King
Unlocked by capturing all of the fiends along the Thunder Plains.
Espada
Unlocked by capturing all of the fiends in Macalania.
Abyss Worm
Unlocked by capturing all of the fiends in Bikanel.
Chimerageist
Unlocked by capturing all of the fiends in the Calm Lands.
Don Tonberry
Unlocked by capturing all of the fiends in the Cavern of the Stolen Fayth.
Catoblepas
Unlocked by capturing all of the fiends in Mt. Gagazet.
Abaddon
Unlocked by capturing all of the fiends Inside Sin.
Vorban
Unlocked by capturing all of the fiends in the Omega Ruins.