Anos is resolute, stalwart, and invincible. His absolute power instills a self-confidence that is only surp***ed by his ego. Because of his overwhelming prowess, Anos possesses an easy-going attitude and an unrivaled sense of perseverance when facing any challenge that may come his way. Even as a child, Anos displayed an uncommon level of maturity, especially in the Mythical Age.
Despite being called the Demon King of Tyranny, Anos has a definitive moral comp*** and generally has a kind and caring outlook. He takes a great interest in the well-being of his family, friends, and followers and is quick to reward them for their loyalty. He is willing to go to great lengths to help their development and reach their full potential. Other people may see him as cruel, but his personal creed is not to kill people needlessly. He values great strength, not only in terms of power but in terms of character as well. He always inspired his followers to embrace love and to strengthen their bonds with their fellow kin given it was most uncommon during the Mythical Age, as he himself was an orphan in his past incarnation and grew up without any family.
While Anos is not inherently evil, his chaotic and sometimes ruthless methods when dealing with his enemies, are what earned him his title. He never actually proclaimed himself the Demon King of Tyranny, but he openly embraced it since the rest of the world viewed him as such. Those who oppose him are terrified of his power and are shocked that a single man could possess such unfathomable power. He doesn't truly care whether those around him acknowledge him as the Demon King or not, as facts aren't a matter of faith.
History
Two thousand years ago, in his previous life, Anos was an orphan. Humans killed his mother while she was pregnant with him, and he was born from her corpse, something he could never forget.[11]
During the war, Anos battled and destroyed various enemies as he encountered the Hero Kanon on the battlefield. The two began to battle, with Kanon managing to injure Anos to a fair degree while Anos would destroy all but a single of Kanon's seven sources, thus forcing Kanon to retreat. The two would continue to meet and battle each other during the Great War, as both gained an unspoken mutual respect for each other's power and determination.
As the war between humans, spirits, gods, and demons raged on, Anos eventually grew tired of the constant fighting. He decided that the only way peace could be achieved was by building walls between the four races, hoping they would forget their grudge after a thousand years or so. Thus he formed an agreement with Kanon, Great Spirit Reno, and the Goddess of Creation Militia, whom he invited to his castle Delsgade and sacrificed himself to supply enough magic for the cause, saying that he would reincarnate after two thousand years.
The unborn child which Anos would reincarnate into, was close to death while still inside his mother's womb. Because the doctors couldn't do anything, even with magic, Izabella prayed daily for her child to be born. It didn't matter to her which divine or demonic being answered so long as they'd help her child. While she was sleeping, the baby's heart stopped inside of her. Izabella's prayers were finally answered when the child's heart started beating again. Little by little, the unborn child regained his strength and grew as Anos' source chose the unborn child to reincarnate in, thus returning life to it. He believes that it was because of his mother's sheer force of will that he was drawn to the baby.