Darth Vader 4

In Andrew's Empire
Darth Vader 4 was built by Commander Andrew's forces on the Metal Planet in 115 ABY to replace Darth Vader 3, who had turned to the Light Side. He was first defeated by Vader 3 when he was blinded and thrown into an active volcano. But since his body parts were made of quantum armour, he was able to be reassembled and returned a few months later to fight Vader 3. Both he and Vader 3 were enhanced into Super Vaders by the Force Creatures so that their would be balance in the Force. Super Vader II, who had been Vader 3 before enhancement, managed to destroy Super Vader with the help of his Jedi allies and the Force Sword.

In Palestine's Empire
Vader 4's spirit attacked Vader 3 when he was captured by the Dark Force Creature in 172 ABY. But the Light Force Creature intervened, saving Vader 3 and knocking the Dark Force Creature back into his realm. However, Vader 4's spirit survived and was soon transferred into a new body with Beskar Armour, which he used to attack Vader 3 in the Outer Rim. Vader 3 managed to beam back to the Intrepid Class Starship Rebellius, but soon realized that his quantum armour was no match for Vader 4's beskar armour. So Vader 3 spent some time upgrading his armour to beskar specs so that he would be better prepared to face Vader 4 for a rematch.

When Palestine's Renegades were forced to retreat, Vader 4 went with them, where he teamed up with his old Sith Master Commander Andrew: who had also been reborn into an android body. Vader 4 and Supreme Commander Andrew were Emperor Palestine's aides while they tried to reform Palestine's Empire in the Unknown Regions.