Ifrit

Ifrit is a powerful fire beast and a summon in the Final Fantasy games. It first appears in Final Fantasy III. Ifrit's signature attack is Hellfire, in which it inflicts fire damage on all enemies.

Final Fantasy V
In Final Fantasy V, Ifrit is first fought as a boss in a hidden room in floor B1 of the Library of the Ancients. Once defeated, the party obtains Ifrit as a summon. They are required to obtain Ifrit in order to bypass a bookshelf located on the leftmost corner of the room from which the party accessed Ifrit's lair.

It costs 11 MP for a Summoner to summon Ifrit. In doing so, Ifrit uses Hellfire on all enemies.