The Celestials

The Celestials are the original three deities of the world. They are the children of ONE.

Seraph
Seraph, known as God of Order, was responsible for maintaining law and order in the world. When the corrupted Cherub attacked the Royal Palace with the Seven Demon Lords, Seraph and Ophani had the Grand Paladin establish the Royal Knights in order to fight them. During the war, Seraph sacrificed himself in order to give an opportunity for Ophani to purify Cherub. Seraph's soul and power were later reincarnated in Tenmu Otsutsuki.

Ophani
Ophani, known as the God of Life, was responsible for maintaining life in the world. When the corrupted Cherub attacked the Royal Palace with the Seven Demon Lords, Seraph and Ophani had the  Grand Paladin  establish the  Royal Knights  in order to fight them. During the war, Ophani purified Cherub's corrupted soul with the sacrifice of Seraph. However, she is killed along with Cherub while trying to protect ONE from ZERO. Before her death, Ophani granted her power to the Otsutsuki Clan in order to prepare for the future apocalypse.

Cherub
Cherub, known as the God of Destruction, was responsible for destruction and balance in the world. He was corrupted by ZERO and created the Seven Demon Lords in order to wage war against ONE. He is later purified by Ophani but is soon killed by ZERO. Cherub's good soul is later revealed to reside inside Lucifer.