Of the many original series characters that Star Wars Rebels has included, one that was added on a little late (or early depending on how you look at it), was the inclusion of Darth Vader.
To be fair, Vader is a character who strongly deserves to be in the series, yet his only appearance was via the ABC special debut of Rebels, of which his scene was tacked on at the end. And even then, it was a hologram appearance.
Now though, we can confirm that Vader will appear in fully body in the season finale of Star Wars Rebels. Here’s a trailer for the finale, don’t blink!