Mr. Jones is/was Casey Jones' father and the owner of Jones Hardware. The elder Jones was a violent, sexist, and angry brute of a man, but Casey still looked up to him and worried what the Purple Dragons would do to their family if he didn't pay up. After flying off the handle when the younger Jones professed his concerns and he punched out a window, Mr. Jones heard another window being busted.
At some point, Hun and his Purple Dragons destroyed Jones Hardware and told Casey to tell his father he still had to pay up. An enraged Casey attacked Hun with a broken bottle, and Hun sicced his men on the boy, beating him bad enough to give him brain damage. Casey notes that he never saw his father again, and after his mother went looking for him, she disappeared, too. He fears them both dead, but in his delusion, he hopes they come back after he's become a better son.