Energy sword

An energy sword (sometimes also referred to as a "beam sword" or "laser sword") is a form melee weapon resembling a traditional sword whose blade consists of, or is augmented by, concentrated energy.

Examples

 * The Lightsaber is the signature weapon of Jedi and Sith in the Star Wars universe. As such, it is a weapon popular amongst the Junkions, who have built working models for their use in combat. It is also used by the Autobot Havok, the Decepticon Nightbird, and the neutral Theshold.