Salvé is one of the very few mutants free in the future. At some point, he was obviously in a camp, given that he does have the M brand, but escaped. 
  
He is French, but speaks with a very good English accent. He is a member of Cyclops' rebellion, and a healer. He healed Jamie's hand (the one that Siryn broke) and tells Madrox that his French accent is also quite good.