Territory: The South, concentrated in Texas
Approximate membership: 2,500
At more than 2,000 members, the Bandidos are one of the largest gangs in America. Though the gang was only just founded in 1996, the gang has a presence in 16 states and 14 countries. The influence of the gang has led the federal government to name them among the Big Four MCs (Pagans, Hells Angels, Outlaws, and Bandidos). The Bandidos' home base is in Texas, where they specialize in smuggling drugs across the U.S.-Mexican border. Their aggressive, effective expansion has been evidenced in their involvement in crimes as far afield as Norway and Australia.