Darth Vader is the primary antagonist of the "Star Wars" film series by George Lucas. Darth Vader is a Sith Lord who works directly under Emperor Palpatine, the leader of the Sith. Initially, he is Anakin Skywalker, a student of the Jedi. When Anakin turns to the dark side, his name changes to Darth Vader. A Jedi disfigures Darth Vader in a fight. Afterword, Darth Vader spends most of his time wearing a uniform that hides his injuries.
Darth Vader's uniform is an extension of himself. He needs it to stay alive because he is missing limbs and has burn wounds from his fight with Obi Wan Kenobi on Mustafar. His mask covers his entire face and gives the impression of helping him breathe because a hydraulics-like sound accompanies his voice. The mask is essential to a Darth Vader costume because the Sith Lord wears it for almost the entirety of his life as Darth Vader. It must be all black. Some Darth Vader costume masks have voice changers. The feature is unnecessary unless you wish to speak like Darth Vader.
A flowing black cape always follows Darth Vader. The cape is not a part of his cyborg suit, which keeps him alive. However, Darth Vader is never without the cape, even when he removes his mask to reveal himself to his son. It flies above, behind and around him during his light saber battles. No Darth Vader costume would be complete without a black cape.
Belt, Control Panel and Light Saber
On the front of Darth Vader's chest resides a rectangular control panel, which has nine buttons, one of which is red, another of which is blue. The control panel apparently controls the functions of his suit. He also has a utility belt with more buttons and controls. Hanging from the belt in a sheath is Vader's light saber. The belt, light saber and control panel are always on Darth Vader. Therefore, they are essential parts of a Vader costume.
Black Outfit, Gloves and Boots
Under his cape and control panel, Darth Vader wears a long-sleeved shirt, which tucks into a pair of black gloves. He also wears black pants, which tuck into a pair of knee-high shiny black boots. As long as the outfit beneath the cape and controls is black with a black pair of boots, the costume will be recognizable as Darth Vader. The boots do not necessarily have to be shiny or knee-high, unless the costume has to precisely mimic the movie costume.