Using cryogenics to sleep past the fall of civilization or nuclear winter is a common theme in the Post Apocalyptic genre. Such characters could have vast knowledge of ancient ways, technology, and locations of ruins to loot. They may also offer scholars a rare first person glimpse into the culture of the Ancients. They may be worshipped by survivors, or killed for the "crime" of ruining the world, or killed for simply not being strong enough to survive the Post Apocalyptic world. In the game, they could be used as a plot device, someone for the players to try and find, revive, protect, and/or deliver to their home base. They might be fearsome foes, armed with a vast array of high-tech gear. One or more of the players might even by Sleepers. An alternate campaign start might have all players play characters in a Modern setting into which the Fall comes.