Mist Dragon

Final Fantasy IV
The Mist Dragon is both a boss and a summon from the game Final Fantasy IV. She is the Summoned Monster summoned by Rydia's mother, and she protects the village of Mist from outsiders. Cecil Harvey and Kain Highwind fight her in the Misty Cave in order to complete a mission given by the King of Baron. However, in defeating her, they also indirectly defeated Rydia's mother, as once a Summoned Monster is defeated, the Summoner who called it is killed as well. This makes Rydia angry with Cecil and Kain, and she summons Titan to defeat them.

The Mist Dragon is obtainable as a summon automatically after Rydia rejoins the party late in the game. It does damage based on Rydia's HP. In the Advance version, the Mist Ring adds a Blink effect when the summon is used.

Final Fantasy: Unlimited
The Mist Dragon also appears as a summon in the anime, Final Fantasy: Unlimited. However, unlike the other summons, the Mist Dragon isn't summoned from Kaze's Magun. Instead, it is summoned by his rival, Makenshi. Speaking the words "Embraced by the magical tune played by mist. Now sleep! Silver Etude!", Makenshi throws a bottle of mist into the air and strikes at it with his sword. The mist will gather and form the Mist Dragon. This summon is one of the few things that can beat Kaze's Magun.