Apollo was the great Olympian god of prophecy and oracles, healing, plague and disease, music, song and poetry, archery, and the protection of the young. He was depicted as a handsome, beardless youth with long hair and various attributes including: a wreath and branch of laurel; bow and quiver; raven; and lyre.
Thanatos - Greek god of the dead. He brother Hypnos rules over sleep. And they are the children of our sweet lady Nox, goddess of the night. Thanatos makes sure dead souls are collected and oversees them in the underworld. His realm is much happier when he and the dead are remembered by the living, and there are paradise-like spots there.
Asclepius - Greek God of Healing. Interesting to note the serpent on the staff, which is a common symbol on many ambulences today. Many believe the gods of myth owed their "magical abilities" to advanced knowledge in their field of study, like medicine.