In the Star Wars universe, a warrior elite under the Old Republic. They used The Force (a Tao-like universal energy field) and Lightsabers to defend the Republic and keep order and peace. Not unlike the Samurai. There are also Dark Jedi, who choose to use the Force for personal gain and power instead of the Greater Good. The only Jedi in episodes 4-6 are Yoda, Obi-Wan Kenobi, Darth Vader, Emperor Palpatine and Luke Skywalker.