Aquarius Fairy Tail
Misaki the Cute
Aquarius is a celestial spirit contracted by Lucy Heartfilia in the anime and manga Fairy Tail.
Aquarius has a serious attitude problem and doesnt mind if Lucy gets hit by her attacks as well as their enemies. She often comments on Lucy's lack of a boyfriend and tells Lucy not to contact her for certain times because she'd be away with her boyfriend (Later revealed to be Scorpio).
Aquarius can only be summoned in water.