User blog comment:ADour/Official title for Marvel's The Avengers sequel announced!/@comment-5313287-20130721171831/@comment-1895174-20130721215032

The villains in Guardians of the Galaxy are Ronan the Accuser, Nebula, and the Collector. Thanos may be involved in some way (especially given his granddaughter is one of the villains), but nothing major.