Lucasfilm has recently released a few short videos on key characters. I say "Part 1" on the title here because they haven't yet made available such a video for the new bad guy (The Inquisitor) or for any of the female characters, so there's obviously more teasers to come. In the meantime, meet (some of) the Star Wars Rebels!
Want to know more about Star Wars Rebels? Here's our earlier article from January 2014.