who was beauty smith ?

He is a mean white man who cheats Grey Beaver for White Fang in order to make WF a fighting dog.

Beauty Smith was a very ugly and cruel man who tricks Gray Beaver into selling him White Fang in exchange for whiskey. He turns White Fang into the "Fighting Wolf" by constantly tormenting him, both physically and emotionally. He has White Fang fight other dogs in order to earn money.