Karen Frost was a US Olympic snowboarder, held captive by an international criminal in a botched hijacking of mutagenic elements during the Winter games. As time passed, her eyes darkened, her tolerance to cold grew even stronger, and she found she could produce a form of smokey gray ice crystal, which oddly did not melt from heat, but instead eventually dissipated from exposure to light. A bit of a sarcastic wild-child, she was soon recruited into the superteam, The Guardstars