Aqua

backstory (Told in book 1)
''In the new memory, Aqua looked around six. She was practicing moving water around. She picked up one ball of water that had a fish in it and smiled.''

''“Daddy! Look what I found!” little Aqua ran over to a tall man with brown hair and aquamarine eyes.''

“What is it aqua?” the man asked.

''“It’s a little fishie! Can we please keep it?” she asked excitedly.''

''“Of course! What’s its name?”''

“His name will be…” Aqua stared at the fish for a few seconds, “Fluffy!”

Aqua’s dad laughed, “It’s perfect dear, go show your mom!”

Aqua ran off to a pretty woman with beautiful, long blond hair and ocean blue eyes.

''“Mommy! Mommy! Look at my new pet! His name is Fluffy!”''

“What a sweet name for an adorable little fish!” said the woman.

''“AH! Coral! Over here! Help!” Aqua’s dad cried from the other side of the beach.''

''“Stingray! Aqua, stay back!” Coral; Aqua’s mother, ran  up to the strange shadowed figure holding a black blade to Aqua’s father-Stingray’s-throat.''

''Shade cut Stingray’s throat open and quickly disappeared like he had never been there. Aqua’s father slumped over and he stopped breathing.''