In 1995 NY hardcore outfit Madball added drummer Walter Ryan, formerly of Possessed and stand in member annex touring drummer for Machine Head. Ryan replaced drummer Will Shepler. In 2000 Walter Ryan would leave to join Oakland Hardcore act Powerhouse.



Several years later Walter Ryan showed up in Murderers Row, featuring Bob Riley (Stigmata) on vocals, Nick Manupella on lead guitar, Leo Curley(Biohazard) on guitar and Sean Nolan (Infected Minds) on bass.