Steven Shane McDonald (born May 24, 1967) is an American rock musician, best known as the bass guitarist in the Los Angeles alternative rock/power pop band Redd Kross.

McDonald also featured briefly on bass in Kyle Gass' side-project Trainwreck in 2002 and 2003, under the pseudonym "Slim Watkins", before being succeeded by John Spiker.

The New York Times, Entertainment Weekly and other outlets reported on it and due to overwhelming demand he added bass to all of the songs, posted the new creation online, and allowed people to download the tracks for free.

He called it an art project named Redd Blood Cells which reached a peak of 60,000 downloads in a single day, causing the server to crash from the traffic.

He recorded four songs with the band, which were first released on the limited edition EP War Pussy and later included on the album Basses Loaded.