Restringindo-nos ao cânon, o romance Tarkin fornece uma boa lista de rumores sobre o Vader:
It was that genuflecting obedience, the steadfast devotion to execute whatever task the Emperor assigned, that had given rise to so many rumors about Vader: that he was a counterpart to the Confederacy’s General Grievous the Emperor had been holding in reserve; that he was an augmented human or near-human who had been trained or had trained himself in the ancient dark arts of the Sith; that he was nothing more than a monster fashioned in some clandestine laboratory. Many believed that the Emperor’s willingness to grant so much authority to such a being heralded the shape of things to come, for it was beyond dispute that Vader was the Empire’s first terror weapon.
- p. 73
Como você suspeitava, não muitos membros do exército imperial sabiam do passado de Vader. O romance Tarkin também sugere isso, pois até mesmo o alto escalão Moff Tarkin não sabia do passado de Vader e só podia nutrir suspeitas baseado em sua experiência anterior com Anakin:
Very early on in their partnership—soon after both had been introduced to the secret mobile battle station—Tarkin grew convinced that Vader knew him much better than he let on, and that behind the bulging lenses of his face mask, whatever remained of Vader’s human eyes regarded him with clear recognition. More than anything else it was those initial feelings that had provided Tarkin with his first suspicion as to Vader’s identity. Later, observing the rapport the Dark Lord shared with the stormtroopers who supported him, and the technique he displayed in wielding his crimson lightsaber, Tarkin grew more and more convinced that his suspicions were right. Vader might very well be Jedi Knight Anakin Skywalker, whom Tarkin had fought beside during the Clone Wars, and for whom he had developed a grudging appreciation.
- p. 73