The Elgen Resistance was a rebel movement and resistance group that fights with the Elgen Corporation. The organization was founded and led by Carl Vey, the boss of the Voice (really Vey's colleague Coonradt), who was the supervisor of the Electroclan , a group of Glows formed by Carl's son Michael.
The group was formed years after the MEI defected and the Glows were born. Shortly before his supposed death, Carl Vey gathered together several of his colleagues involved with MEI development. They were formed to protect each other when they knew that the Elgen was killing people who knew about the MEI caused deaths.