Apollo is indeed associated with light, but he is not the Greek king of light. That title would more accurately belong to Helios, the personification of the Sun itself.

Here's why:

* Apollo: While Apollo is a major deity in Greek mythology, his domain is much broader than just light. He is associated with:

* Light and the Sun: He is often seen as the bringer of sunshine and warmth, but this is more a reflection of his role as the god of music, poetry, and arts, which are often associated with light and inspiration.

* Music and Poetry: He is the patron god of music, poetry, and the arts, and is often depicted with a lyre.

* Healing and Prophecy: He is also the god of healing and prophecy, and is associated with the oracle at Delphi.

* Youth and Beauty: He is the god of youth and beauty, and is often depicted as a handsome young man.

* Helios: Helios is the personified Sun god, riding across the sky in his chariot each day. He is the literal embodiment of sunlight, and his role is much more focused on providing light and warmth to the world.

So, while Apollo is associated with light and the Sun, he is not solely the king of light. That title belongs to Helios.