When the Star Wars Rebels mid-season 3 trailer dropped, it showed off Saw Gerrera making his way back to animation, Sabine Wren using the Darksaber, the ever-conniving Grand Admiral Thrawn, and then, finally, Darth Maul heading to Tatooine, where he found Obi-Wan (or is it Old Ben?) Kenobi.

That last bit, of course, set fandom aflame, but it also brought up some real concerns. When you dance this closely to the story of the original Star Wars trilogy, your story is getting much riskier.

"Everything has to make sense from a story standpoint, and if it makes sense and it's valuable to the character's past, then I don't think you hesitate to do it," Dave Filoni told ComicBook.com of using Ben Kenobi. "I think you have to have a lot of good reasons when you do things and work it out, and you hope things work out as you imagined them and designed them." Ultimately, though, it wasn't Ben Kenobi he had to specifically be wary of changing or affecting - he's a guest in this story, and the people it genuinely affects need to be the central characters, like Ezra.

"Certainly these characters aren't foreign to me having worked here so long. So, I'm pretty confident when going into them what they're about, but you do tread carefully because you can't do it just because you're trying to add something [to the guest star's past]. I've always said, it's the same thing with Ahsoka. It has to be valuable to Ezra. This experience, whatever it is, whatever form it takes, has to be valuable to the characters that are the center of Star Wars Rebels." What Filoni and the Rebels team don't want to do is make this into fan service for fan service's sake.