Demon Mail is a mid to high-ranked armor that can be bought for 25,000 gil or found at Falgabard. It can be equipped by the Onion Knight, Freelancer, Warrior, Dragoon, Viking, and Dark Knight classes.
Demon Armor is the strongest armor for Dark Knight Cecil, providing 9 Defense, 3 Magic Defense, and -10 Evasion. It can be bought for 3,000 gil at Fabul. In the 3D remakes, it remains largely the same, but loses the -10 Evasion penalty.
Demon Armor retains its properties from the previous game bar the -10 Evasion, but is an unused armor that nobody can equip.
Demon's Mail is a mid-ranked heavy armor that provides 27 Defense, absorbs Shadow-elemental damage, increases the power of the user's Shadow-elemental attacks, and teaches High Tide. It can be bought for 5,900 gil at Daguerreo (disc 3), Bran Bal, and Ipsen's Castle, found at Mount Gulug or from the Forgotten Plains Chocograph treasure, or stolen from Tantarian. Only Steiner and Freya can equip it.
Demon Mail is a mid-ranked heavy armor that provides 29 Defense, +5 Strength, and +3 Vitality. It requires the Heavy Armor 5 license to equip, and can be bought for 4,900 gil at Rabanastre and Nalbina Fortress, found at Salikawood (The Trimahl Water-Steps), or dropped from Wild Saurian (1% chance).
In the International version, it now provides 30 Defense, +5 Strength, and +3 Vitality, while still requiring the Heavy Armor 5 license to equip. It can now be bought for 4,700 gil at Mt Bur-Omisace, found at Barheim Passage (The Zevah Span) and Phon Coast (Cape Uahuk), or dropped from Darkmare or Bull Croc (3% chance).
demon is "an evil spirit or devil, especially one thought to possess a person or act as a tormentor in hell."A