Construction: Kylo Ren's lightsaber is an ancient design, crafted by Ren himself after he turned to the dark side of the Force. Unlike traditional lightsabers, which have a stable blade, Kylo's lightsaber features a crackling, unstable red blade, reminiscent of an ancient Sith design.

Kyber Crystal: The crystal powering Kylo Ren's lightsaber is notably unstable, causing the blade to flicker and crackle with energy. This instability is believed to be a result of Kylo's use of a cracked kyber crystal. The process of obtaining the crystal and crafting the lightsaber likely involved Kylo tapping into his intense emotions and embracing the dark side fully.

Crossguard Design: One of the most distinctive features of Kylo Ren's lightsaber is its crossguard design, with two smaller blades protruding from the sides of the main blade. These crossguards are not purely decorative; they serve a functional purpose, venting excess energy from the cracked kyber crystal and preventing it from overloading the lightsaber.

Symbolism: Kylo Ren's lightsaber reflects his inner turmoil and conflict. The unstable blade represents his struggle with the light and dark sides of the Force, while the crossguard design hints at his desire to emulate the ancient Sith and establish his own identity as a powerful Force user.

Legacy: Kylo Ren's lightsaber has become an iconic symbol of his character and the broader sequel trilogy. Its distinctive appearance and unique design have made it instantly recognizable to fans of the franchise.