Dave Filoni said that Hera is most certainly the character who keeps this group of rebels together.
Vanessa Marshall is no stranger to strong female characters, lending her voice to Wonder Woman in last year's animated superhero adventure Justice League: The Flashpoint Paradox. The voice actress spoke about how excited she gets every time a new script comes in.
In addition, now that the final main role has been introduced, you can check out all of the featurettes and photos for previously-announced characters Inquisitor, new astro-mech droid Chopper, the Jedi cowboy Kanan (voiced by Freddie Prinze Jr.), teenage con artist Ezra (voiced by Taylor Gray), alien strongman Zeb (voiced by Steve Blum) and Mandalorian warrior/graffiti artist Sabine (voiced by Tiya Sircar).
Star Wars Rebels debuts with a TV movie this summer on The Disney Channel, before moving to its regular network home on Disney XD later this fall.