Cold Snap

Cold Snap is a high-profile saboteur who has the ability to temporarily freeze all subatomic vibrations in his body. This of course absorbs much of the heat energy out of his surroundings when the hold on his particles is released, but this moment of pure stillness allows his atoms to pass through solid objects completely unobstructed save for the occasional atomic nucleus. Thus he can jump through walls and floors, producing a sharp decrease in temperature of the room he enters. An amusing aspect of this ability is that he is totally still in his frozen state, so his body remains completely rigid for the extent of his traveling through the wall, which is admittedly only a fraction of a second when he has a running head start.

Cold Snap specializes in infiltrating, having gained a thorough knowledge of security technology and procedures and how to circumvent them. He works for the highest bidder (usually Quantis, the Warring Clans, or any number of unallied planets or terrorist factions) and has snuck into places to gather intel, break important things, and generally be a nuisance. He doesn't often steal things, since he can't carry much with him when passing through walls.