Twenty-Two is the guitar player, vocalist, and founding member of Treble Damage. He is also the primary songwriter for the debut album, Psychotic Episode. Twenty-Two is a fugitive, on the run under an assumed name.

Chip Znuff has been playing bass and singing with his band, Enuff Z'Nuff, for a long, long time. He has been in the majors, on the charts, in videos and movies and has accumulated some well-known fans through the years. Chip is the party, and always has something cooking. He is frequently hired for recording sessions by producers and bands looking for a world-class player. He is also a prolific writer, having co-written and played on about a dozen albums with EZN. Chip Znuff tours relentlessly, whether with EZN or any number of other well known acts.

Matt Walker played drums for The Smashing Pumpkins when founding drummer Jimmy Chamberlin left the band. He finished the Mellon Collie and the Infinite Sadness tour with the band and played on dates through the beginning of the Adore tour. Matt also performs on the song "The End is the Beginning is the End" for the Batman and Robin movie soundtrack, as well as portions of Adore. In 2005, he performed on Garbage's album, Bleed Like Me, and toured with Billy Corgan. Walker has been playing drums with Morrissey on 2006/2007 tour dates.