Tuff is an American glam metal band formed in 1985 in Phoenix, Arizona by guitarist Jorge Manos (DeSaint) and bassist Todd Chaisson (Chase). The initial incarnation of Tuff was prior to taking on its "Glam" image, and the music was significantly "heavier". This little documented line-up played in the local Phoenix market for roughly a year, at such clubs as Rockers and Bootlegger, opening for various National Acts, including Flotsam and Jetsam.

In 1986, drummer Gary Huckaby replaced Louthan. Cordet left to work with another Phoenix area band, and eventually, Michael Angelo Batio in the Los Angeles–based band, Michael Angelo. A second guitarist David Janssen also left the band to attend the Musicians Institute. After drummer Gary Huckaby left the group in 1986 to work with another local project, the band enlisted drummer Michael Lean and vocalist Terry Fox, who left the band shortly afterwards to pursue an ice skating career. With replacement vocalist Jim Gillette, the band recorded a four-track EP entitled Knock Yourself Out (1986). However, Gillette soon departed to form Nitro and was replaced by Stevie Rachelle.