Following the Darth Vader photo from Star Wars Rebels that debuted last week, a new trailer has been released for the special airing of Spark of Rebellion on ABC that gives fans a better look at the iconic villain.

Set between the events of Star Wars: Episode III - Revenge of the Sith and Star Wars: Episode IV - A New Hope, the Star Wars Rebels story unfolds during a dark time when the evil Galactic Empire is tightening its grip of power on the galaxy. Imperial forces have occupied a remote planet and are ruining the lives of its people. The motley but clever crew of the starship Ghost - cowboy Jedi Kanan, ace pilot Hera, street-smart teenager Ezra, the "muscle" Zeb, warrior firebrand Sabine, and grumpy old astromech droid Chopper - will face threatening new villains, embark on thrilling adventures and become heroes with the power to ignite a rebellion. The voice cast includes Freddie Prinze Jr. as Kanan, Vanessa Marshall as Hera, Steve Blum as Zeb, Tiya Sircar as Sabine, Taylor Gray as Ezra, David Oyelowo as Agent Kallus and Jason Isaacs as the Inquisitor.

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We know that James Earl Jones will return to voice Darth Vader once again, as he did in the original Star Wars movie trilogy, in Spark of Rebellion. But we never get to hear his full voice in this trailer. We'll have to wait and see the full scene when Spark of Rebellion airs once again on Sunday, September 26 at 7 PM ET on ABC.