(Anakin) Skywalker was seduced by the dark side of the Force. Fueled by rage and discontent with the pace of Obi-Wan's training, Anakin challenged his master to a duel. Despite newfound power bestowed by the dark side of the Force, which added to his already formidable abilities, Anakin was grievously wounded in the fight.

His burning anger kept him alive, and he was forever scarred not only by his wounds but also by betrayal. He abandoned his former identity. When metal coupled with flesh in the form of cyborg implants and enhancements required to sustain him, Skywalker's transformation was complete. He was no longer Anakin. He was Darth Vader.

At the time of his transformation, Vader never knew he was due to be the father of twins. Obi-Wan Kenobi hid the children from the Dark Lord and Vader's master, Emperor Palpatine. Vader somehow discovered that he had a son, Luke Skywalker, but never suspected he had a daughter, Leia, who was secretly taken to be raised by Bail Organa, Viceroy and First Chairman of Alderaan.

In the chaos that accompanied Palpatine's rise to power, Vader became one of the Emperor's most loyal servants. The Emperor entrusted him with the elimination of the Jedi Knights. During these dark times, Vader and his agents destroyed the Jedi order.