The Stranger's lightsaber was a red-bladed lightsaber used by the Sith known as "the Stranger" during the High Republic Era. It had the ability to be separated into two lightsabers, one of which was a shoto.
The Stranger splits his lightsaber in two
In 132 BBY, the Stranger, in his disguise as "the Master," met with his pupil and assassin Mae-ho Aniseya and ignited his lightsaber after telling her that an acolyte can kill a Jedi. During the mission to Khofar, the Stranger wielded his lightsaber and cortosis gear against a team of Jedi, ultimately cutting through most of the detachment. When confronted by Padawan Jecki Lon, he broke his lightsaber into its two halves to execute the Padawan. The Jedi Knight Yord Fandar jumped into the Sith's path and used the man's own cortosis helmet to briefly shut down the Stranger's blade, only for the Stranger to overpower and kill Fandar by breaking his neck.
Osha threatens the Stranger with his own saber
The Stranger's lightsaber, albeit unidentified, first appeared in "Lost / Found," the first episode of the first season of the live-action series The Acolyte, which premiered June 4, 2024. The lightsaber later received an identification through its entry on the Databank hosted on StarWars.com.