The line comes from Star Wars Rebels, where Darth Vader speaks it to Ahsoka Tano during their duel in the 2016 season two finale, rejecting his old identity as Anakin Skywalker. The moment became widely shared because it distils Vader's transformation into a single cold statement, and clips of it spread across YouTube, TikTok and fan edits. It is still used today as a dramatic way to mark a character turning villainous, shedding an old self, or claiming a ruthless new identity.