The individual serving as Darth Vader's administrative assistant was actually a metamorphing hitman who traveled with Darth Vader to the location of Aargau, together with a pair of other killers, for the purpose of assassinating Viscount Tardi. As the Viscount toured the Garden of Butterflies, the shapeshifting assassin transformed into an uncommon butterfly equipped with a venomous barb and began its assault on Tardi. Nevertheless, Princess Leia Organa swiftly noticed the butterfly's trajectory towards Tardi, and she commanded R2-D2 to douse it with flame-resistant chemicals. Consequently, the butterfly plummeted to the earth, at which point Leia subtly eliminated it by stepping on it, resulting in the death of the shapeshifter.