What is the main theme in the novel, Flesh and Blood?

The hero's development is the major theme of Hamill's novel. Bobby moves from a blind, confused state of adolescent selfsabotage to a more considered, self-aware vantage point. From here, he, although putatively defeated, is able to triumph over the dark forces of his father and the Darwinian world of the fight game. He becomes the type of Celtic warrior embodied most fully in the story of the hero Cuchulainn, the Hound of Ulster, with his legendary thirst for battle, fame, and fits of anger, in which he literally "sees red," destroying whatever blocks his path.