He is shown to be very psychotic and violent (as shown when he "rewards" his son by giving him his first beer, upon learning he had killed Mike Hanlon's dog). Butch would often beat his son and wife on a daily basis. In 1956, Butch's wife eventually left him, after nearly being beaten to death by him.
He was very racist towards William Hanlon and his family, and would call William a variety of racial slurs. He even went as far as to kill all of William's chickens and to draw a Swastika on his property (although he only stopped when William pointed a rifle at him and threatened him).
After a violent rock fight in late July of 1958, Henry's sanity slowly deteriorates, not only from It's influence, but also his father's as well. In late August, he was killed by his son, who slit his throat while he was sleeping with a switchblade provided by It.
Upon returning to home from the sewers, Henry was eventually convicted for Butch's murder, and had been arrested by the cops, who had been waiting for him.