Asura (summon)

Asura, also known as Ashura, is a summon in the Final Fantasy series. She has only appeared in one main game, but has also appeared in a spin-off.

Final Fantasy IV
Asura is a summon in Final Fantasy IV. She is the queen of all summons, and lives with Leviathan in the Land of Summons. In order to obtain her, Cecil Harvey must go to the Land of Monsters with Rydia and speak to her. After battling her, she is obtained, and the party can speak to Leviathan. She is a healing summon, and will randomly cast Cure 3, Protect, Cure 4, or Life on the party.

Final Fantasy XI
Though Asura does not appear as a summon in Final Fantasy XI, it is the name of a server.

Final Fantasy: Crystal Chronicles
The Ashura appears in Final Fantasy: Crystal Chronicles as an artefact. It raises the strength statistic of its possessor by 1.

Chocobo's Mysterious Dungeon 2
Asura also appears in Chocobo's Mysterious Dungeon 2.

Vagrant Story
Asura appears in Vagrant Story as an optional boss encountered in New Game+ only. She is a goddess that was imprisoned centuries ago in the depths of the "Iron Maiden" dungeon.