1) Name.
2) Ships. I know, it's silly, planning out who a character is going to date almost first in the line. But that's the way I roll.
3) Family. Is someone else going to RP his/her brother/sister/parent? What is their blood, half-, pure-, or muggleborn?
4) Strange Qualities. Does he like to dance? Does she only eat fish?
5) Appearance
6) Personality.