Force scream

Force Scream is an involuntary reflex of a Dark Jedi as a result of frustration from battling an opponent. If a Dark Jedi is being beaten and frustrated by his foe, he may let out an enraged scream, amplified through the Force, that triggers shock waves that ripple through the Force, devastating both the Dark Jedi and those who are unfortunate enough to be in close proximity. The Force Scream has been called “a wave of hatred, amplified and fueled by the dark side, that is capable of smashing through mental and physical defenses with ease”. A number of references to Dark Jedi in Old Republic archives often mention the Dark Jedi losing control, violently, in the final moments of battle.