Which character should I make a backstory of next?

The names of the characters are above them. I'm posting this today so that I have tomorrow and the next week to take and post pictures of whoever's comic is next. These are the last ODST characters, then I'll be doin an origin on three spartans that will join the 434, and even 2, maybe 3, bonus origin stories, one on Ghost's friend, Jen, and another on, well that's a surprise.