Yeah, at the start of the game you get to create your own character for you to use in the game. You chose their gender, their appearance (based on three models), their hair, eyes, hair color, all that. After that you get to chose one stat for them to specialize in, and one stat they do worse in. (Sound a LOT like natures, doesn't it?) No matter what you chose, though, the avatar you create is one of the best units in the game with fantastic stats all around.
And, uh, have you never heard of DLC (Downloadable Content), or are you asking about what KIND of DLC there is?