One of the great things about Ezra Bridger.

One of the reasons why Rebels is so beloved by Star Wars fans, myself included, is because it is so grounded in themes of found family and asks what someone would do for the ones they love. To me, Rebels is the perfect show because it connects so many other aspects of Star Wars. It brings back fan-favorite characters like Captain Rex and Ahsoka Tano, but it honors where they’ve been and blends their story with the original trilogy. Kanan Jarrus and Ezra Bridger are always going up against formidable foes.

Lightsabers Emit Green Sparks When Clashing

Even When We Don’t Think They Should

One of the coolest details we get to see throughout Rebels is that whenever lightsabers clash with one another, green sparks are emitted, no matter the color of the lightsaber. The most common color clashes are Kanan Jarrus’ blue lightsaber and Ezra Bridger’s first lightsaber with the red blades of the Mandalorian Darksaber.

Usually, when red and blue meet, they form purple, but that isn’t the case when lightsabers clash in Rebels. No matter the blade's color, the sparks that emit are green. This is obvious when there are lightsaber duels in dark settings, such as the Rebels season 2 finale “Twilight of the Apprentice.” While on the Sith planet Malachor, Kanan, Ezra, and Ahsoka come across three Imperial Inquisitors and Maul, which eventually concludes with an epic duel between Ahsoka Tano and her former master, Darth Vader. Because of Malachor’s dark scenery, the green sparks from the lightsabers are even more noticeable.

The "Twilight of the Apprentice" two-part finale included multiple lightsaber duels, including Kanan Jarrus, Ahsoka Tano, and Maul teaming up against three Imperial Inquisitors.

Lightsabers In The Original Trilogy Did The Same Thing

Rebels’ Homage to the Original Trilogy is Subtle

Going back to the first lightsaber duel seen in the Rebels series finale.

It’s a small detail meant to be an homage in Rebels, but it also creates continuity between the show and the original trilogy films, which take place only a few years after the Rebels series finale.

It’s not entirely clear why lightsabers spark green, but we do know that the blade of a lightsaber is plasma and is powered by the kyber crystal inside the hilt. It’s plausible that when the plasma of two blades strikes each other, green sparks are normal, kind of like how when metal strikes metal, it emits red and orange sparks. Rebels is one of my favorite shows because there’s always something new to discover, and the green lightsaber sparks are just another reason why Rebels continues to be one of the most connective Star Wars titles.