Aquarius

Aquarius the Water Bearer is a Celestial Spirit that is one of the 12 Golden Zodiac Keys. Her key is currently owned by Lucy Heartfilia.

Personailty
Aquarius is very moody toward her owner Lucy (weither it's just to her or everyone is unknown). However she is very relaible in battle. However, she tends to target Lucy as well as the enemy.

In contrast, she is very kind and lovable towards her boyfriend Scorpio to which she shows a completely different side of herself. She also goes as far as to threaten Lucy to keep quiet about her moodiness in front of Scorpio "Or else".

Intro arc
As Lucy and Natsu Dragneel fight Bora, Lucy summons Aquarius to send Bora's ship full of captured girls to the harbor. Happy does show a friendly interest in her given that she was a fish, to which she doesn't resond to. After doing her job, she states her desire to not be bothered for a week as he boyfriend is taking her on a vacation. Before she leaves, she rubs it into Lucy's face that she has a boyfriend while Lucy doesn't.