A trailer for the second half of “Star Wars Rebels: Season 4” has debuted and in it we see the the introduction of Emperor Palpatine to the Rebels series, who will be voiced by the actor who portrayed Palpatine in the Star Wars Saga, actor Ian McDiarmid.
The end begins when Star Wars Rebels returns with its final episodes. Monday, February 19 at 9pm EDT on Disney XD
Source: Star Wars