If you dont already have enough characters

Siegfried

I'd pick her just so she could betray us for her honny Kefka.

I'd pick... erm... Hold on, let me think of a NPC no one mentionned yet... Oh, I know, one of those weird guys that kick you off the bridge in the Zone Eater.

Siegfried, Sigfried, and Ziegfried (spelling?)!

Arvis. He'd be awesome. He'd have crown removing skills. Like the way he removed that slave crown from Terra. That was slick.

Angry green guy inside of Zone Eater who shoves you off of the bridge.

He's got super-strength, for god's sake.