James McDonnell (born March 21, 1961), known by the stage name Slim Jim Phantom, is the drummer for Stray Cats. Alongside band mates Brian Setzer and Lee Rocker, he spearheaded the neo-rockabilly movement of the early 1980s.
Phantom currently plays in the band Kat Men with Imelda May guitarist Darrel Higham and is the host of the weekly radio show "Rockabilly Rave-up" on the satellite radio station Underground Garage.