Summonoidette

Summonoidette, originally Franania, is a mage transformed into a summonoid by some enemy summonoids.

Story
Franania was born in 3212. In 3225, she is captured by some enemy summonoids. Linette's summoner warriors try to save her, but Franania and the summoner warriors are transformed into summonoids. After that, Franania is known as Summonoidette, and starts helping the enemy summonoids out.

Summonoidette is brought back to normal in all 3 endings.