Gall Trayvis

Senetor Gall Trayvis is a character who appears in the Disney XD animated seires Star Wars Rebels, voiced by Brent Spiner. He is a member of the Imperial Senete. He posed as a dissenter of the Galactic Empire and a voice of truth. It was however all an act and was in fact an Imperial agent who tricked Rebels into coming out of hiding so they could be identified and captured.

Trivia

 * His voice actor Brent Spiner, is best known for his role as Commander Data in Star Trek: The Next Generation.