Darth Calthius's lightsaber was the Lightsaber wielded by Darth Calthius, Dark Lord of the Sith from 30-86 ABY, and Emperor of the Sith Empire from 40-86 ABY. Constructed in 15 ABY, during Calthius's apprenticeship to Darth Bane's spirit, the weapon was used by the Sith Lord for the rest of his life. The weapon earned a reputation throughout its use, because of the people Calthius killed with it.