Kujula Kadphises
The earliest documented ruler, and the first one to proclaim himself as a Kushan ruler, was Heraios. He calls himself a "tyrant" in Greek on his coins, and also exhibits skull deformation. He may have been an ally of the Greeks, and he shared the same style of coinage. Heraios may have been the father of the first Kushan emperor Kujula Kadphises.