Phantom wasted no time launching a new project; he and Lee Rocker teamed with guitarist Earl Slick to form the more rock-oriented Phantom, Rocker Slick. They released two albums, 1985's Phantom, Rocker Slick and 1986's Cover Girl, but the group broke up by the end of 1986 when Phantom and Rocker reunited with Setzer to record a new Stray Cats album, Rock Therapy. Throughout the late '80s and early '90s, the Stray Cats periodically regrouped for album projects and recording sessions, but after 1993's all-covers set Original Cool, they once again called it a day. In 1988, Phantom took a brief stab at acting, playing Charlie Parker's drummer in Clint Eastwood's jazz biopic Bird. It proved to be his only major film role, though he and Rocker performed on the soundtrack of the 1997 film Inventing the Abbotts. As the '90s wore on, Phantom became involved in a variety of musical projects. With Rocker and guitarist Danny B. Harvey, he founded the Swing Cats, who played retro-rock with a swinging feel, releasing four albums between 1999 and 2001. One of the guests on the second Swing Cats album, 2000's A Special Tribute to Elvis, was Lemmy Kilmister of Motörhead, a longtime rockabilly fan. An informal jam in the studio led to Kilmister joining forces with Phantom and Harvey to cut an album of rockabilly classics. Originally released under the title Lemmy, Slim Jim Danny B in 2000, the trio would record and tour under the name the Head Cat. The debut album would be reissued in 2006 as Fool's Paradise, and a second long player, Walk the Walk…Talk the Talk, arrived in 2011.
Phantom and Harvey also worked together in another meeting of rockabilly stalwarts, 13 Cats, which featured former members of the the Polecats and the Rockats. The combo released albums between 1996 and 2006. Two performances Phantom and Harvey recorded with Johnny Ramone appeared on a 2007 EP, Ramones Solo Performances. Phantom launched yet another group in 2007, the Katmen, in which he was joined by Imelda May guitarist Darrel Higham and bassist Al Gare; onetime Guns N' Roses guitarist Gilby Clarke was also involved with the group, who issued two albums, Katmen in 2006 and The Katmen Cometh in 2013. Phantom and Clarke had previously worked together in the short-lived band Col. Parker, who released an album, Rock N Roll Music, in 2001. Phantom also records and tours with the supergroup Dead Men Walking, which includes Captain Sensible from the Damned and Mike Peters from the Alarm; their debut album, Additional Parts Inside, came out in 1999, and the band reconvened in the studio for 2015's Easy Piracy. In 2016, Phantom published an autobiography, A Stray Cat Struts: My Life as a Rockabilly Rebel. When not busy with his other projects, Phantom frequently performs with his solo combo, Slim Jim's Phantom Trio. ~ Mark Deming, Rovi