The Kai Justiss lightsaber is a single-bladed blue lightsaber wielded by Jedi Knight Kai Justiss. Kai Justiss is a Clone Wars era/Rise of the Empire era Jedi Knight in Star Wars Legends. Darth Vader kills Justiss on the Death Star around the time of the events of Star Wars: A New Hope.
The Smuggler lightsaber is a single-hilt blue lightsaber owned by The Smuggler. The Smuggler is a Rebellion era Force-sensitive smuggler and thief in Star Wars Canon. The name of the Smuggler is unknown. The Smuggler is instrumental in creating Uprising, an insurgency movement opposing the Empire.
The Ima-Gun Di lightsaber is a single-bladed blue lightsaber wielded by Jedi Master Ima-Gun Di. Ima-Gun Di is a Clone Wars era male Kajain’sa’Nikto Jedi Master in Star Wars Canon.
The Sifo-Dyas lightsaber is a single-bladed blue lightsaber wielded by the mysterious Jedi Master Sifo-Dyas in Star Wars Canon. Sifo-Dyas, a Jedi Master and Jedi Council member prior to the blockade of Naboo.
The Shaak Ti lightsaber is a single-bladed lightsaber constructed by Jedi Master Shaaki Ti in Star Wars Canon. The lightsaber emits a blue blade. Shaak Ti is a Clone Wars era Togruta Jedi Master known for her patience, wisdom, and skilled use of telekinesis during battle.
The Kanan Jarrus lightsaber is a blue-bladed, two-piece lightsaber featuring an emitter shroud with a tsuba (handguard). The single-blade lightsaber includes an adjustable blade length and a low-power setting to facilitate safer sparring.