He is a fallen angelic immortal who was Nyx 's Oath Sworn Warrior and Consort . He left hundreds of years ago because he was jealous of Nyx 's playmate and friend, his brother Erebus . Nyx has officially banished him from the Otherworld.

Kalona has black hair, amber eyes, and black wings.

He is the father of all the Raven Mockers . Rephaim and Nisroc are two known sons. Rephaim is his favorite son. 

Mother Earth created him.

He affinity is flying.

He is thousands of years old, and can change his appearance to people's preferences, making people fall in love with him at the same time. Which is kind of cool.

He loves A-ya, a woman created by ancient Cherokee women to love him and to trap him under the earth even though he is suppose to be Nyx 's Lover. He believes Zoey Redbird is A-ya reborn.

He first appears in the fourth book, Untamed .

His last appearance was in the last book, Redeemed

He is a warrior and lover to Nyx . Kalona is also taken by Nyx herself.