Photo Credits: PG1. SECOND LEAD
The Star Wars universe is a crazy place, but there are consistencies that you can count on now and again. One of those is that whenever you run into a Force-wielder who turns to the dark side, you can usually count on them wielding a red-bladed lightsaber. The movies have never explained why this is, and fans have just grown accustomed to seeing the bad guys use crimson energy. Now we finally have an in-canon answer to why this is the case thanks to the Star Wars novel Ahsoka: because they're naturally incapable of using any other color.
The latest Star Wars novel follows Ahsoka Tano, Anakin Skywalker's apprentice from Star Wars: The Clone Wars, during the time period between her last appearance on that series and her return in Star Wars Rebels. In the midst of her adventures, it is explained what the deal is with the red lightsabers. For the causal Star Wars fans out there, lightsabers channel their energy though a kyber crystal, which a Jedi find on the planet Ilum or several other locations. However, it's a more complicated process than just snatching a random one and putting it in the lightsaber. A Jedi must use the Force to guide them through the selection process, and once a connection is formed, that's when the crystal turns blue, green or another color (like purple). Conversely, a dark side user, whether they're Sith or a Knight of Ren, doesn't have that same connection. They can only obtain one of these crystals by either stealing them or taking them from a slain enemy, and then they have to bend the crystal to their will. This leads the crystal to "bleed," hence why the villains always have red lightsabers. The corruption means those other colors are inaccessible. Some will wisely point out that Anakin Skywalker slaughtered younglings and Separatist leaders with a blue lightsaber in Revenge of the Sith, but that was his old blade. He hadn't gained his Sith weaponry yet.
Depending on how much Darth Vader action we get in Rogue One: A Star Wars Story, fans may see a red lightsaber again as soon as December 16. If not then, we'll definitely see one when Star Wars: Episode VIII is released on December 15, 2017.
