Aquarennis

Aquarennis (アクアレニス Akuarenisu) is an ancient Dragon, the foster father of Mizuna Skyletter and the teacher of Mizuiro Skyletter.

Appearance
Aquarennis is a blue dragon, representing the water element. He takes the appearance of a chinese dragon, with pure white, silky hair that covers the back of his entire body and his eyes. He's got a long, scaled ans serpentine body. He's got long barbels, that, when combined with pectoral fins, give him a watery look. He has a very long body, that no one has ever seen the ending. He needs to have, at least, his tail inside water, which constrain him from flying for so long as other dragons, because he breathes from gills.

Personality
Aquarennis is characterized as the smartest of all Dragons. He is extremely smart, being able to have visions from the future and to see the future with his water orb. At his great age, Aquarennis tends to have his eyes closed or squinting. He is portrayed and described as the wisest and most knowledgeable dragon of all time. He can read through one's mind and does not let himself be taken by one's intentions. He quickly understood that Mizuiro was seeking power and knowledge, a selfish attitude. Mizuna states that "Even though he talks in an ancient language, his words have meaning and speak always truth!".

History
Several years ago, Mizuna, the mother of Mizuiro, was found uncounscious on her home town in Joya by Aquarennis. He took her to his small temple, carved on a rock, where he trained her throughout the years.

Muzuna managed to enter a Guild, where she was successful. After marrying, she moved to Joya's capital, where she got pregnant of Mizuiro. After her husband died, she and her baby boy went living with Aquarennis, who took care of them like family.

After the boy grew up, Aquarennis predicted his future and it said "Where the hidden flames lie, a hero shall rise, the darkness shall be extinguished, the water cleanses all...". Mizuiro grew up with that prediction on his mind, training alongside Aquarennis and his mother. Unlike most Dragon Slayers, he still keeps contact with Aquarennis, with whom he trains.

Magic and Abilities
Reader of History (史の読者 Fumito no Dokusha): With this ancient and forbidden technique, Aquarennis can predict the future. He can both use his mind or the orb of time to read one's destiny. Reader of History is both a Holder and Caster-type Magic, only known by Aquarennis.
 * Daikokuten (大黒天 Large Black Heaven): According to Buddhism, Daikokuten is the god of time. Since his water orb reads through the lines of time, it was named after the great god of time. It is a simple bubble of water, that is actually solid, that can reflect one's future.