The Cyberines follows a "family" of Cybernetic Marines. They are the top tier of elite combat class of soldier: the USCC, the United States Cyberine Corps. Their members are recruited and trained at a young age and then cybernetically or genetically enhanced. This can be due to an accident or injury that has occurred in the line of duty or just to unlock their genetic potential. Think GI Joe meets the Avengers and was trained by the Marines.