Akharin was a soldier born in the year 3834 BC, in Mesopotamia on Earth in the Star Trek universe. In his own words, he was a bully and a fool. He should have killed during a battle but when he was pierced through the heart and lived he realized he was immortal.
After this he took on many aliases and lived for six thousand years, sometimes playing a large part in human history. In the end, he chose the name Flint and lived on a planet he had bought.