Dangun
Mythologically, Dangun was the grand son of the God. He was the founder of Gojoseon. And he set up the capital at Asadal. For about 4340years, Gojoseon changed to Korea. So Dangun is Korean`s ancestor.
Once upon a time, Hwanung, the God Hwanin`s son, wanted to go down to the human world. Hwanin noticed that and let Hwanung go down to the human world with three amulets. Hwanung went to the Sindansu in Mount Taebaek, with his 3,000 followers. He managed human world`s agriculture, morals, and other 363 parts of societal works. All these things went well.
One day, two animals visited Hwanung for begging him to change them to human beings. One was tiger, and the other was bear. Hwanung gave them an armful of divine wormwood and twenty cloves of divine garlic, and said: "Eat those for 100 days without being exposed to the sunshine. Then you guys will become the human beings."
The two animals went to the cave and followed Hwanung`s order. But during this process, tiger couldn`t endure this trial, and rushed out from cave. On the other hand, bear endured this trial and became a woman. But nobody was willing to marry her. So the bear woman prayed for conceiving a baby at Sindansu. Then Hwanung transformed himself into human being for a while and married her. The bear woman gave birth to a baby. That baby was Dangun.
Dangun managed Gojoseon for 1,500 years and after that long period, Giza succeeded to the throne. And Dangun retired from the world and became a mountain god.