Jar'Kai

"Much like master and apprentice, two blades are. One can sharpen and improve the other."

- Yoda

Jar'Kai was a method of utilizing two lightsabers in combat. Asajj Ventress and Ahsoka Tano were two notable practitioners of Jar'Kai, preferring to use two lightsabers as opposed to one. The cyborg General Grievous had been outfitted with arms that could split in half, enabling him to hold four lightsabers. The Besalisk fallen Jedi Pong Krell took advantage of his four arms to use his own variant of Jar'Kai, to great effect, simultaneously wielding two double-bladed lightsabers in combat against his own clone troopers on Umbara. Sith Lord Darth Maul took to using Jar'Kai after claiming the darksaber from Pre Vizsla. Darth Sidious was proficient in this style, using both his primary and backup weapons against Darth Maul and Savage Opress on Mandalore.

Although not necessarily masters or regular users of the technique, it was not uncommon for Jedi to use the lightsaber of a downed comrade in conjunction with their own. Notable cases included Obi-Wan Kenobi, who utilized both his own weapon and that of Adi Gallia to duel Darth Maul and later defeat Savage Opress on Florrum; Anakin Skywalker, who used Kenobi's lightsaber during his duel with Darth Tyranus on Geonosis, along with a final duel with him on the Invisible Hand, though this was only to finish the duel; Kit Fisto, who used his former Padawan Nahdar Vebb's lightsaber against General Grievous; and Kanan Jarrus, who used his apprentice's lightsaber against the Grand Inquisitor on the Sovereign. Kanan also demonstrated his proficiency while dueling the Temple Guards on Lothal.

During the skirmish on Dathomir, Ezra Bridger wielded the darksaber alongside his own lightsaber to destroy the altar of the Nightsister spirits.

During his mission to Rodia, Luke Skywalker attempted to use Jar'Kai when he battled a Ghest using Jedi Knight Huulik's lightsaber and his own. Luke was successful in slaying the beast but admitted it was from "panicked reflexes and really good weapons."

Those with exceptional combative application could wield a normal lightsaber in conjunction with a longer melee weapon, be it a bladed staff or a double-bladed lightsaber. The Grand Inquisitor displayed some knowledge to an extent, using his own double bladed lightsaber along with the temporarily claimed Jarrus' against a large fyrnock at Fort Anaxes. Maul disguised his double-bladed weapon as a walking stick before detaching the wooden element and wielding them separately to fight three Inquisitors on Malachor. Kylo Ren snatched a vibro-voulge from a slain Elite Praetorian Guard, briefly using it along with his crossguard lightsaber as he and Rey waged a long, grueling battle against overwhelming numbers.

Non-canon appearances

 * Star Wars: Galaxy of Heroes