As far as Lightning goes, Nomura describes her as having muscular (read: sexy) legs, "isn't sweet", very strict to herself and others, and despises those who whine. She's a lot like a military soldier. He says the scenario writer for FFXIII, Motomu Toriyama, wanted Lightning to be even more muscular and macho, but Nomura thought people wouldn't be fond of her as a main character if she was built that way. She's a little less feminine than Aya Brea from Parasite Eve, apparently.
The hero's clothes from Versus XIII will probably be revised from what we've seen so far. He's not like Cloud or Squall -- Nomura admits that when people hear him speak, a lot of people may not like him. Who knows, maybe he's really whiny. Like Tidus on whiny-steroids. His name will be related to weather as well, but Nomura is bored of this tradition so perhaps it will change, or be a surname of some kind. The next time he talks about Versus XIII information, Nomura says, he will reveal the character's name. It's probably something lame like Snow. What do you guys think?