Hasbro's officially licensed line of Star Wars Lightsabers expands with Kyber Core, featuring translucent parts and a glowing core to emulate kyber crystals. In addition to a glowing blade, this Lightsaber for kids also features a see-through glowing core, inspired by the kyber crystal found at the heart of every Lightsaber. The Lightsaber Forge Kyber Core Secret Sith Set is inspired by the secret servant of the dark side from The Acolyte live-action series on Disney+.