Angelo Espinosa was a former gang member from the east Los Angeles area who faked his own death for numerous reasons; to make sure that his friend Tores was not blamed for murder, to hide his newly manifested mutation from his family, and to leave that part of his life behind.

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.

Skin and Tores acted as bait to lead the Sentinels into an ambush, and Gil completed the trap by starting a huge explosion, allowing Generation X to escape.

[4] After the Academy closed due to the machinations of Adrienne Frost, Skin returned to Los Angeles with Jubilee in tow.

[5] Some time later, Skin and Jubilee, along with Magma, Bedlam, and a handful of other unknown mutants were found crucified on the lawn of the X-Mansion.

[10] He was later approached by Madison Jeffries manifesting himself through the land, who explained to him that he was thrown in the Pit of Exile for trying to create a place for Danger to live, which was deemed a violation of rule three by the Quiet Council.

In the alternate timeline of the Age of Apocalypse, Skin was featured in Generation Next as one of the protégés tapped by Colossus and Shadowcat to rescue Illyana Rasputin from enslavement at the Sugar Man's Core.

This version possesses full elasticity akin to Mister Fantastic, though using the ability causes him great pain.