Name: Cassandra Riverina "Casey" Aqua (Born as Cassandra Marie "Casey" Katherine)

Appearance: Messy jet black hair with bangs hanging over right eye and styled neck length, sapphire blue eyes, cerulean blue hoodie over black t-shirt, dark blue denim jean shorts, pale skinned, short and skinny for age, barefoot.

Weapons/Abilities: dark blue staff, power over water, she can breathe underwater and glide on underwater currents. She can also fly and make it rain.

Bio: Born on December 23, 1783, in the late eighteenth century, Casey lived with only her mother since her father had abandoned them when Casey was only four years old. Casey was born under the name, Cassandra "Casey" Marie Katherine. Casey and her mother, Nicole Katherine, were very happy together until Nicole became very ill when Casey was ten years old. Casey took care of her mother and spent every free moment she had caring for her mother, something her whole town admired her for. However, Nicole succumbed to her illness and passed away on December 26, 1797. Casey, not wanting to be a burden on her town, ran away and began living on her own. Sadly, a few days later, on December 30, 1797, Casey was attacked and killed by a band of bandits. Shortly after her death, Casey was revived and made the spirit of the water.

Upon becoming the water spirit, it didn't take Casey long to realize that no one could see or hear her at all. But since her powers could be seen when they were in use, Casey quickly became a legend to the people of the 19th and 20th centuries because of her powers. Casey also discovered that she had trouble remembering nearly everything about her human life. She remembered that her first name was Casey, that she had died, what kind of personality she had, and that she was 14 years old. Other than that, Casey could not remember anything about her human life.

In 1802, Casey met and befriended a deer spirit named Narain. Narain was very friendly and, unlike Casey, could remember her human life as she too had died and been revived as a spirit. Narain could also be seen by anybody, also unlike Casey. The two girls kept in touch for the next 3 years, which was easy since Narain's forest was very close to the pond that was Casey's permanent home when she wasn't doing her job.

8 years after her death and debut as the water spirit, Casey finally met Jack Frost. For the first 5 years after becoming the water spirit, Casey had been trying to catch Jack Frost so that she could talk to him. She had heard that Jack was like her, a boy who had died and been revived as the spirit of an element, only Jack could remember next to nothing about his past. She wanted to be friends with him, having also developed a crush on the older boy. In 1805, Casey finally caught Jack Frost. He was very nice to her and the two made a deal: Whenever Jack finished his job of bringing winter, he'd come back to see Casey.

As the water spirit, Casey can control the water with the help of her dark blue staff that has a lighter blue gem at the end. Casey can breathe underwater and glide on the underwater currents, as well as fly in the air and she can also cause light to heavy rain. All of these powers are connected and controlled by Casey's emotions. As the water spirit, Casey can't stand mild to extreme dryness or mild to extreme heat as both cause water to evaporate and thus would be the end of Casey's immortal life.

Both when she was human and as the water spirit, Casey was and is a very stubborn but also very kind kid. She does have a temper, but it usually hides the fact that Casey is really just a fragile and scared kid whose time came all too quickly. After her death, Casey took on something of a mischievous personality. In all honesty, all Casey truly wants is for someone to be able to see her and befriend her for who she truly is, not what she is able to do.

Her wish was granted on July 18, 2012, 215 years after she had died and became the water spirit. On that day, Casey met Samuel Sakimoto and Maria Gonzales, two teenagers who firmly believed in Casey's legend and so, could see her clearly because they believed in her. Like Casey had wished, the three became friends, Sam and Maria being friends with Casey for who she was not for her powers.

Friends: Narain (deer spirit), Jack Frost (winter spirit), Nicholas North "Santa Claus" (spirit of Christmas) Toothania "The Tooth Fairy" (teeth collector), The Sandman "Sandy" (dream bringer), Samuel "Sam" Sakimoto (human), Maria Gonzales (human), Windsong (music spirit)

Love Interest: Jack Frost (winter spirit)

Enemies: Pitch (the Nightmare King)