[Fey]

oooooooo, yes, I love alllllllll the games of this series, and own all but 4 since I do not yet have a system to play it on! Doesn't mean I've not played it, just don't own it LOL

Fav characters go by the game so:
Soul Blade: Taki, ninja chick for the win!
Soul Calibur 2: Ivy, OMG I still want her mock pirate outfit!
Soul Calibur 3: Aaaaaaaaaamy, pretty pretty loli will put the hurt on you!!
Soul Calibur 4: Hmm, toss up...I always love Raphael as a good secondary for any game, but this time I can be yoda AND Darth Vader...
Soul Calibur 5: CANNOT WAIT TO FIND OUT!!

As to sigfrieds connection ot nightmare, nightmare is the 'evil' that sigrieds soul created when he was possessed by the sword, so yeah, super connected.

I'm a fighting game NUT so really, I love this game for the fact that it's old school, great combos, great taunts, and faaaaaaaabulous designs! When they introduced Creat-a-Soul...well...then it just got perfect :)