Helios Ἥλιος" was the personification of the Sun in Greek mythology.

He is the son of the Titan Hyperion and the Titaness Theia  and brother of the goddesses Selene, the moon, and Eos, the dawn.

Helios was described as a handsome god crowned with the shining aureole of the Sun, who drove the chariot of the sun across the sky each day to earth-circling Oceanus and through the world-ocean returned to the East at night. Helios is said to drive a golden chariot drawn by steeds. 

As time passed, Helios was increasingly identified with the god of light, Apollo.