Hi there! Thank all of you for your support and advice! I will try to take them into account in the further development of the concept.
To better understand the concept of the character, I decided to write a small background story.
So, one ambitious demigod of the solar dynasty in the prayers of people began to receive more and more requests for help. Deciding to find out what the problem was, he went down to the people and saw how the demons began to fill their world. Relying only on his own strength, in an unequal battle he was defeated and had to turn to the Ancient Gods to receive a weapon capable of clearing the world of people from demons. Having received as a gift the divine bow, which became part of his body, he went to exterminate the demons. Driven by fury, he cruelly began to destroy all demonic beings even outside the human world. When almost all the demons were exterminated, he came to the Abode of Darkness, where he met the Teacher of demons who had become on his way to the extermination of those who survived. In a fierce battle, the demigod was defeated and struck by a dark force. Only a part of the body, which was covered by a divine weapon, retained divine features. The teacher said: "Moved by pride and hate, you almost exterminated my race, breaking the balance of power in the universe! From now on, you will be one of us and restore what you destroyed! With your arrival, darkness will come to the world even in the daytime!".