Who is Pap Finn in "The Adventures of Huck Finn"? What does he do?

Pap Finn is the alcoholic father of Huckleberry Finn. He is a mean, abusive father who kidnaps his own son in order to get the money that Huck recovered from Injun Joe. He serves as a contrast to Jim, a black slave, who,ironically, is a much better father figure to Huck than his own white dad. After one night when Pap almost kills Huck in a drunken rage, Huck is forced to leave St. Petersburg in order to save his own life. When Huck decides he must leave Pap, he kills a pig and covers Pap's cabin in pig's blood in order to make Pap think Huck is dead. Both literally and metaphorically, this results in Huck's "death" to his old values and a rebirth to new values as he sets off on his journey with Jim down the Mississippi River.