Quote Originally Posted by Wolf Kanno View Post
It might be nice to play as a character named Snow that I don't want to kill for once... damn you Suikoden IV!

Seeing how Nomura works, I'm pretty sure Lightening and Snow are probably their real names. ;)
I do believe it's already been stated that these are aliases; whether or not their real names will ever be given is up in the air, I think. I suppose it depends whether or not their "true" identities are relevant to the plot (of which we know too little to make such a qualification).