Long before he became the best part of the Star Wars prequels, Obi-Wan introduced the world to lightsabers in 1977's Star Wars, where he described a lightsaber as "the weapon of a Jedi Knight. Not as clumsy or as random as a blaster. An elegant weapon...for a more civilized age."
Given his penchant for dismembering, Obi-Wan Kenobi is seldom seen without his blue weapon of choice. While he still used other weapons on occasion, Kenobi primarily relyied on lightsabers throughout his career as a Jedi. Now, we'll be taking a deep dive into each of Obi-Wan's three lightsabers, noting their usage in significant battles in canonical Star Wars works.
OBI-WAN'S FIRST LIGHTSABER
While training as a Jedi Padawan, Obi-Wan constructed his first lightsaber, basing its design partially off of his master Qui-Gon Jinn's lightsaber. This lightsaber debuted in Star Wars: The Phantom Menace.
Unlike the modified lightsabers of Kit Fisto and Darth Vader, Obi-Wan's first lightsaber wasn't waterproof, which resulted in the weapon briefly shorting out when Obi-Wan lands in the swamp waters of Naboo during The Phantom Menace. This is why Obi-Wan runs from the STAP-mounted battle droids instead of engaging in combat in the film.
During the movie's climactic "Duel of The Fates," Darth Maul gains the high ground by Force-pushing Obi-Wan into a reactor pit, which causes Obi-Wan to cling for his life on a conveniently placed pipe.
During the battle, Darth Maul kicks Obi-Wan's lightsaber down the pit, never to be seen again. Even though Maul had the high ground, Obi-Wan performs an awesome Force-assisted flip, grabs Qui-Gon's lightsaber and cuts Darth Maul in half with his master's weapon.
OBI-WAN'S SECOND LIGHTSABER
After relying on Qui-Gon's lightsaber for some time, Obi-Wan constructs a second lightsaber seomtime before Star Wars: Attack of the Clones, based loosely on his first blade.
Although he only really uses it in on emovie, Obi-Wan gets some mileage out of this lightsaber fighting bounty hunters, cutting off the hand of Zam Wesell in a space-nightclub. Evidently, this lightsaber had some waterproofing added, which allowed Obi-Wan to engage in a rain-soaked fight with the bounty hunter Jango Fett on Kamino.
On Geonosis, the lizard-bug Geonosians captures Obi-Wan and confiscating his lightsaber, which is not seen again. After being rescued from a botched arena execution, Obi-Wan is thrown a blue loaner lightsaber. Obi-Wan uses this loaner to dismember and then execute his would-be executioner: a lizard-crab known as an Acklay.
OBI-WAN'S THIRD LIGHTSABER
Upon becoming a Jedi Master, Obi-Wan constructs his third lightsaber, which lasts considerably longer than the previous two blades. Obi-Wan relies on this lightsaber throughout the entirety of Star Wars: The Clone Wars, Star Wars: Revenge of The Sith, Star Wars: Rebels up until his death.
After ambushing General Grievous in The Clone Wars, Obi-Wan uses his third lightsaber to sever half of Greivous' hands, before his saber is knocked away, only to be retrieved by Commander Cody, the sole clone trooper with a normal name.
In Revenge of the Sith, Obi-Wan fights his child-murdering student on Mustafar. Despite Obi-Wan holding the high ground, Anakin tries to copy Obi-Wan's flippy-jump from his fight with Maul, resulting in Obi-Wan severing Anakin's legs and left arm. As his former student is immolated by adjacent lava, Obi-Wan takes Anakin's lightsaber, which makes a fine addition to Obi-Wan's collection.
Since Maul survived his initial fight with Obi-Wan and returned with a fancy set of robot legs, the two warriors met again in a battle that also involved Maul's brother, Sava Opress, and the Jedia Adi Gallia in the Clone Wars episode "Revival."After Savage gores Adi, Obi-Wan retrieves his fallen ally's lightsaber, duel-wielding during an epic two-on-one brawl. Though he should have been overpowered by the Maul brothers, Obi-Wan kneecaps Savage, claiming his left arm with the sword.
Alone, Darth Maul later confronts Obi-Wan on Tatooine in Star Wars: Rebels. Instead of a fancy flip-filled fight, this duel is quick and relentless, as Obi-Wan cuts Maul down with a single strike.
While living in exile on Tatooine, Obi-Wan is tasked with protecting the young Luke Skywalker from afar. In order to keep a low profile, Obi-Wan refrains from using his saber -- until he is attacked by the Wookie bounty hunter Black Krrsantan in 2016's Star Wars #20 by Jason Aaron and Mike Mayhew. Krrsantan manages to leave the planet with his limbs intact, but not before Old Ben Kenobi gives Krrsantan his trademark facial scar.
During A New Hope, Obi-Wan demonstrates the combat effectiveness of a lightsaber by literally disarming Ponda Baba in a cantina. Originally, Obi-Wan was supposed to decapitate Ponda, but the incident is still the first chronological instance of a lightsaber being used on a living creature.
On the first Death Star, Obi-Wan and Darth Vader go for round two in a comparatively tame lightsaber fight. Obi-Wan sacrifices himself, accepting death from Vader. Though he could have claimed Obi-Wan's saber for himself, Vader rejects it, and Obi-Wan's longest-serving weapon is seemingly destroyed along with the rest of the Death Star.