Culture hero
mythological hero specific to some group
A culture hero is a person, usually a mythical or legendary person, who is believed to be the first one to do something. In Greek mythology, for example, Prometheus who stole fire from the gods and made it possible for humans to use it for cooking and other purposes. In Chinese mythology, one culture hero is Hou Ji, a person with a human mother and a divine father, who discovered how to grow many crops and taught other humans about farming.
