Gran Kain

Long ago, in a time before thought, there was only a Globe in which all creation was mixed. As there was nothing with which to compare it, the globe was big and small, dark and bright, everything and nothing.
Over a hundred million years, the Globe began to grow and eventually two powers slowly began to form within. As they grew, the powers developed consciousness, becoming aware of their individuality, and separated into white light and darkness. White light formed as female and called itself Einhasad. The darkness formed as male and named itself Gran Kain.
Einhasad and Gran Kain joined their strength to break out of the Globe, which shattered into pieces of all kinds. Soon after that, they married. Out of this marriage there issued five children: the oldest daughter was Shilen, the oldest son was Pa'agrio. The second daughter was named Maphr, the fourth child, again a son, was Sayha. Their youngest daughter was named Eva.
Soon afterwards, Einhasad created, with the help of her children, the four elder races, Elves, Orcs, Dwarves, and Arteias. When Gran Kain saw that, he became curious and jealous, wanting to create a race of his own. He imitated Einhasad and shaped a form in his image, asking his children to bestow spirit onto this form. But since Shilen and her siblings had already given their fine essences to Einhasad, all that remained for Gran Kain's attempt at creation was the spirit of stagnant and rotten water, the spirit of dying fire, the spirit of barren and contaminated earth, and the spirit of wild and violent wind.
Satisfied, Gran Kain took everything that was given to him and cried, "Look at the living creatures I am making! Look at they who are born with the spirit of Water, the spirit of Fire, the spirit of Earth and the spirit of Wind. They will be stronger and wiser than the Giants! They will rule the world!"
Gran Kain shouted with great pride to all the world and instilled life into the creatures of his own image. However, the result was terrible. His creatures, the so-called "Humans", were weak, stupid, sly, and cowardly. All the other gods despised Gran Kain's creatures. Overcome by the shame of his failure, Gran Kain abandoned his creation and went into hiding for a time.
Soon the god of chaos and destruction became restless again, however. Having reaped only scorn from his wife for his failed attempt at creation, he started an affair with his oldest daughter, Shilen, who still admired her father in a way, thus becoming an easy prey for his lust. Promptly she became pregnant. When Einhasad found out about this, she became furious with rage. As it often goes, she did not blame her husband for his lewd behavior, but her daughter. Stripping Shilen of her position as water goddess, Einhasad ordered her banished from the abode of the gods. Like before with the Humans, Gran Kain turned his back on the situation, and Shilen was left to deal with her fate alone.
The heavily pregnant girl fled to the east. Deep in the middle of a dark forest, she gave birth - cursing Einhasad and Gran Kain with each excruciating labor pain. The children born of Shilen's horrible labor bore the despair and anger of her curses and became demons. Among them, the strongest creatures were called "Dragons". Shilen was filled with wrath towards Einhasad who had banished her, and towards Gran Kain who had seduced and then abandoned her, and her siblings who did not help her in her hour of need. Gathering the strength of her children, Shilen created an army to punish the gods. Aulakiria, the Dragon of Light, pleaded with her mother to abandon her plans. But Shilen would not be stopped, and the demons invaded the palace of the gods. A horrible war, lasting for several years, ensued. Countless angels and demons were killed, all as a result of Gran Kain's unrestrained behavior.
But calling Gran Kain just a "god of destruction" would be too simple. When the Giants, disgusted with the disgraceful behavior of the gods, went to war against the heavens and suffered an utter defeat, it was Gran Kain who saved the last survivors from Einhasad's wrath, and it was Gran Kain who hid the Giant's army of genetically engineered warriors, the Kamael, between dimensions, so that Einhasad could not find and destroy them. It was always Gran Kain who, due to a lack of intelligence, had caused the problems in the first place, but it was Einhasad, the purported "goddess of creation", who had wreaked the actual destruction.
[1] NCKorea High Five Preview Site