American hardcore band from Philadelphia, PA. Their first live shows and recordings date to 1980, with founders Damon and Glenn Wallis on guitars, Steve Marasco on bass, and J.R. Arters on drums. By 1982, the lineup of Ruin was largely settled: Vosco Thomas Adams on vocals, Cordy Swope on bass, the Wallis brothers on guitars, and Richard Hutchins on drums. Paul Della Pelle became the drummer when Hutchins left the band in 1984. All six members played the so-called ReUnIoN shows in 1996, 1997, 2013, and 2016.