Bad Boy is a hard rock band from Milwaukee, Wisconsin, USA, that was formed in the mid 70s, probably in 1974 under the name Crossfire. In 1977 the band changed its name to Bad Boy, when getting signed to United Artists in 1977.

Founded by Steve Grimm, John Marcelli, Joey LaVie, and Lars Hanson while in their teens. Their first 2 albums reached the top 100 on the national charts. Their next 2 albums were self produced. The band reformed once in 1998 and produced a best of CD and again in 2002 to release We Should've Been Dead By Now an album of all new original material and more recently Live Northern Lights in 2005.

Inducted into the Wisconsin Area Music Industry (WAMI) Hall of Fame