Not many details have been
revealed about the characters of the
game. From the trailer shown at E3
the character shown was a young
woman wielding a retractable
gunblade-type weapon which can
transform into a sword or gun, but
does not function as both at the
same time - instead it can
transition from one to the other, as
shown in a brief scene in the
trailer.
The character's name is rumored to be Lightning. Several screenshots of
the battle screen display the name
Lightning next to the ATB meter.
"Lightning" appears in a consistent
spot on the screen even as the
character performs several different
attacks. Another argument in favor
is that Kitase/Nomura games have a
tradition of aerial themed names for
the main characters such as Cloud,
Squall, Tidus ("sun" in Okinawan),
and Sora ("sky" in Japanese).
However, this word could also refer
to a spell (though this is unlikely
since a spell is listed to the left
called "Thunder"), a Limit Break, or
possibly a special sort of attack
unique to the game.
Other rumors give her the name "Natch". This appears to stem from an
incorrect understanding of a review
of the initial press conference; the
word is actually mentioned in
reference to Final Fantasy Versus
XIII, and doesn't appear to be a
name but a comment on the number of
spiky-haired characters created by
Tetsuya Nomura.