The Non-Canon Expert looks at why Grievous’s suit and cybernetics were more advanced and impressive than Darth Vader’s. This is a Legends story for Darth Vader and Grievous with information found within the Episode 3: Revenge of the Sith novelization, «Star Wars: Dark Lord: The Rise of Darth Vader,» «Star Wars: Death Star,» «Star Wars: Labyrinth of Evil,» and «Star Wars: Visionaries.»