Unidentified dark side entity

"I am the darkness, the all consuming horror, the ultimate fear!"

- The dark side entity, to Anakin Skywalker

This dark side entity appeared in a vision to a young Anakin Skywalker during his training as a Padawan in the Jedi Temple.

Biography
"I shall consume you, smother you in hate and fear, in blood and tears. You are mine, Anakin Skywalker, forever and for always."

- The dark side entity, to Anakin Skywalker

Sometime after the Battle of Naboo, during a lesson with Jedi Master Tera Sinube in the Jedi Temple on Coruscant, the young Padawan Anakin Skywalker sensed being choked by something he could not see.

That night, feeling a disturbance in the Force, Skywalker left his dormitory and went to the High Council Chamber, where this dark side entity appeared in front of him. Activating his lightsaber, Skywalker engaged the entity in a lightsaber duel and inquired it on its motives. The entity then told him that he would turn to the dark side of the Force.

Foreshadowing his future attack on the Jedi Temple, a group of defenseless younglings materialized in the High Council Chamber. The entity told Skywalker that he could not save them, and that their fate was already sealed. The entity then subjected him to Force lightning. As he was losing all hope, Skywalker intuitively used telepathy to call out to Padmé Amidala, who heard his desperate plea far across the galaxy, on the planet Naboo. Focusing on his close friend, Skywalker filled up with energy of the light side of the Force and destroyed the entity.

Following the incident, Jedi Knight Obi-Wan Kenobi, warned by Tiplee, found his apprentice in the High Council Chamber. The exhausted Padawan was then taken to his room, where he fell asleep. In the corridor, Grand Master Yoda explained to Kenobi that Skywalker had experienced a powerful vision and that perhaps, in time, they would understand it.

Powers and abilities
"You do not understand the power of the dark side&hellip; yet!"

- The dark side entity, to Anakin Skywalker

This dark side entity wielded a red-bladed lightsaber. It was skilled in Force choke and Force lightning, two abilities mostly used by practitioners of the dark side of the Force. It also proved to be impervious to Anakin Skywalker's attacks while he was in a state of anger. However, the entity disappeared when Skywalker employed the light side after reaching out to Padmé Amidala by telepathy.