Jack Sloper was a sixth year Gryffindor during Dumbledore's Army and the Year of Darkness.
Jack was born deaf, but had amulets so he could here people speak. He has a cat named Whiskers, who he got when he was six.
Jack had a daughter with Deborah Smith, Brianna Sloper. Jack had slept with at least eleven girls throughout sixth year. Jack died during the Battle of Hogwarts.