The Star Wars Characters Who MUST Be In The New Movies

The brand new Star Wars trilogy is a blank canvas, wide open for J.J. Abrams, Lawrence Kasdan and Simon Kinberg to create something new and brave. But we're bound to see some familiar characters from the original films, plus some people from the E.U. Which characters absolutely need to be in the new films?

Please include a picture or clip (or poster or comics panel or book cover) for your chosen Star Wars character. And please mention his/her name and why they need to appear. Thanks!

Top image: Ahsoka Tano. Imagine if she just turns up in the middle of Episode VII — older and wiser, but still totally badass. Or if they're doing standalone films set between the original trilogy and the new films, we could meet her there. Even if Clone Wars isn't exactly in continuity any more, she could still turn up. Right? [Update: As various people have pointed out, Clone Wars is apparently still in continuity after all.]