Also, if any of you would like to expand on your character's skeleton, feel free to. I encourage it, so that whoever plays the character matched to your own will have a little taste of your own personal take on the character you've picked. However, this is not required. Feel free to make a back story for them as well. Whatever character you have picked is now yours to manipulate to be whatever you wish. :)
You may also take a look at Dancing Flower's character Cerberus as an example of what I mean by "expanding your character's skeleton."