Los is a character from William Blake's mythological writings, and perhaps the figure Blake himself most identified with. Blake had a vision in which he met and became one with Los.
Blake refers to him as the "eternal prophet", creator of the visionary city of Golgonooza. Los is regularly described as a smith, beating with his hammer on a forge, which is metaphorically connected to the beating of the human heart. The bellows of his forge are the human lungs.
Los resembles the archangel Michael, who brings light to the gloomy regions of the subconscious, and the Ida nadi of yoga.
In this illustration by Blake, Los is seen entering a tomb, carrying the sun in his right hand. Los is an anagram of sol, the sun.
In Greek folklore, St Michael also assumed the god Hermes' role as the psychopomp who leads souls to Hades after death, going where other angels would fear to tread. In this he is like the Hindu deity Shri Bhairava, an aspect of the ascetic god Shiva, who, in his asceticism and absorption in the innermost Self, is completely unaffected by the world of the living and the dead, and can happily inhabit a graveyard without fear, aversion, and risk of possession. Shri Shiva/Bhairava presides over the heart chakra on the left side.