Double-Bladed Lightsaber

The double-bladed lightsaber, also known as the saberstaff, was a lightsaber variant that featured a blade emitted from both ends.

History
The Dathomirian Zabrak Sith Lord Darth Maul wielded a red saberstaff he created himself, Savage Opress, Maul's brother, also wielded a red double-bladed lightsaber.

Count Dooku's personal assassin and apprentice Asajj Ventress had a pair of curved-hilt lightsabers that could be joined together at the hilt into a single weapon by a locking mechanism becoming a double-bladed lightsaber.

During the Clone Wars, Besalisk Jedi Master Pong Krell wielded two twin double-bladed lightsabers, one blue and one green-bladed, which could fold at the middle. The Jedi Temple Guard wielded a similar weapon, the yellow double-bladed lightsaber pike.

The Imperial Inquisitors, Dark Side Adepts tasked at identifying and hunting down Jedi following Order 66, fought using their unique version of the weapon. Their red double-bladed spinning lightsaber could also be used as a regular single-bladed lightsaber.

In 3 BBY, Maul wielded another double-bladed lightsaber.

Non-canon appearances

 * Disney Infinity 3.0
 * Star Wars: Galaxy of Heroes
 * Angry Birds Star Wars II
 * William Shakespeare's The Phantom of Menace: Star Wars Part the First
 * LEGO Star Wars: Droid Tales