Why does anvil exert his power over tucker

Anvil exerts power over Tucker in "The white circle"because He is envious of the life Tucker has and to take his anger out from the abuse that he recieves from his father.

Explanation:

Anvil also forces Tucker to call his father "old man" instead of father so that he does not feel inferior to Tucker.

Tucker says " he takes beating from Anvil because Anvil is bigger and stronger than him. hence the statemement "Because this went beyond any matter of courage or shame"