So...

Tempted to sign up as either:

-- Ghor, from Metroid Prime 3. He'll only have his wits, his basic technical/engineering skills, and his Plasma Beam initially, but will no doubt be working to try and replace/rebuild his old battle suit and figure out a way to undo the current catastrophe.
-- The Batter, from OFF. Will most likely stick around simply to find ways of making this new world a... purer, place. The purest. Everything pure beyond comparison. Just don't expect any straight answers as to what he means by that.
-- Roxas, from Kingdom Hearts II (prior to 'reuniting' with Sora). His memories fleeting and his body partially converted into data, Roxas possesses a weapon of unimaginable power... and doesn't really know what it is, why he has it, or anywhere near the full extent of its abilities. Mainly he's just depressed about losing out on his summer vacation.
-- Abe, from Abe's Odyssey/Exodus. A strange, blue-skinned Mudoken who can summon portals and possess those with weak minds. He is an eco-terrorist and freedom fighter who tirelessly works to free his people from enslavement by the power hungry and short-sighted Glukkons.
-- Red, from Transistor. A popular musician of the highly advanced, self-altering city known as Cloudbank, Red awakens armed with a talking weapon known as the Transistor and the ability to slow-down time.