Darth Revak

Darth Revak was a Dark Lord of the Sith.

Powers and abilities
Despite his numerous prosthetics, Darth Revak had amazing skill with the force. He had enough skill with telepathy to be able to mentally control someone a galaxy away. His telekinesis was similarly advanced, but lacked fine motor control, making it almost useless for anything but combat. He is also highly skilled in lightsaber combat. He is able to use two lightsabers at once. He also developed his own unorthodox style of fighting. Unlike most users of two lightsabers, he doesn't use Jar'kai, he simply uses single-bladed techniques with a lightsaber in each hand.

Cybernetics
After nearly drowning in a pool of acid, most of his body was replaced by prosthetics. Almost everything but his head, arms, and half of his torso are cybernetic. His prosthetic legs had a mostly normal appearance except for his feet, which resembled cloven hooves. His prosthetic torso replaced everything below his pectoral muscles and the entirety of his spine along with his heart and lungs. Though his head is still organic, most of his face is covered with cybernetics. His cybernetic eyes cover most of his face, making him look like he's wearing a metal mask. Because of the accident that took most of his body, his vocal cords and airway were also damaged, forcing him to rely on a respirator to breathe and a vocabulator to communicate. The only visible organic parts of his head are the top and back of his head. His arms are completely organic above his elbows, but his forearms and hands are cybernetic. Because of his cybernetics he resembled an upgraded version of Darth Vader.