Dark Side of the Force (Earth-2356)

"But beware of the dark side. Anger, fear, aggression... the dark side of the Force are they, easily they flow... If once you start down the dark path, forever will it dominate your destiny. Consume you, it will..."

- Yoda, to Luke Skywalker

The Dark Side of the Force, also known as Bogan, is an aspect of the Force. Individuals who used the dark side drew their power from more intense, raw and darker emotions such as fear, anger, hatred, passion, and aggression. The Sith and rogue Jedi are perhaps the most well known practitioners of the dark side, with the former being the mortal enemies of the Jedi Order, who served the light side of the Force. There were others, such as the Inquisitorius and the Knights of Ren who, though not Sith nor rogue Jedi, could draw upon the power of the dark side.

Source

 * https://starwars.fandom.com/wiki/Dark_side_of_the_Force.