Angelo Espinosa was a former gang member from the east Los Angeles area who faked his own death to leave that part of his life behind. Skin was one of four young mutants (including M, Husk, and Blink) abducted by the Phalanx, a techno-organic alien race. The reason behind the abductions was so that the Phalanx could uncover the secret behind their inability to assimilate mutants into their collective. Through their combined efforts and those of Banshee, Emma Frost, Sabretooth, Synch, and Jubilee, the four young mutants managed to escape their confines; although, Blink sacrificed herself by using her powers to destroy the Phalanx that had captured them.