Darth Gonk

Darth Gonk was Darth Vader's secret apprentice. He reigned during the first years of the Galactic Empire. He had a vast knowledge of the force that even rivaled the most powerful sith, such as Darth Sion and Darth Maul.

Darth Gonk's Creation
In 17 BBY, long before Vader took Starkiller under his wing, Vader, using his expert engineering skills, created a droid designed to be attuned to the force and be his pupil. Due to the droid's flawed design, however, he had accelerators implanted in him so he could run, and had to have his lightsaber implanted into his hip in order for him to use it in combat. Vader and his master, Sidious, had to use the force to give him sentience. When he was brought to life, Gonk was in excruciating pain throughout his entire life. However, this caused him to implement his pain in combat and use it to fuel himself with rage.

Gonk's Jedi Massacre
Shortly after Gonk gained sentience, he followed Order 66 and executed every Jedi that he saw across multiple systems, including the Naboo system, the Tatoo system and the Mon Calamari system. He killed 800 Jedi in total and killed many more Jedi than Darth Vader, his estimative kill count totaling up to 89 (not including Mace Windu, as it is unclear if he survived).

Replacement
Darth Gonk would soon be replaced by Galen Marek, and when he found out, he was furious. During Marek's first training, Gonk engaged with Vader using all of the rage he had over the past three years of his life. He had been waiting for this very moment. For powerful enemy he could only defeat with rage. Their duel was long and grueling, but eventually Gonk realized this was a fight he could not win, so he ran away to an escape pod, escaping to a rebel fleet. Gonk then only had one goal. Kill Darth Vader.

Death
In 13 BBY, one year after his fateful duel with Vader, Gonk was stranded on Tatooine. On this planet, he came across a 6 year old Luke Skywalker. In that moment, he realized that Luke would kill Vader. His ultimate goal would eventually be completed. And, in order to destroy the sith for good, He would need to kill Sidious, too. So, he went to what seemed to be a small moon, that was destroyed by an asteroid collision, but it turned out to be the Death Star. He realized that was where the emperor most likely was. So, he went to the throne, ignited his lightsaber, and was instantly dismantled by Sidious.

Gonk's Lightsaber
Gonk wielded a lightsaber that looked almost identical to Luke's lightsaber from Episode VI, but with a darker color scheme. He generally used a mix of Forms II, III, and VII in combat, but for his duel with Vader, he simply used Makashi. His lightsaber crystal was actually the crystal of former jedi, Sifo-Dyas, but Sidious used the dark side of the force to change it into a red crystal.

Sith
Darth Vader (14 BBY) {Draw}

Darth Sidious (13 BBY) {Lost}

Jedi
Ahsoka Tano (17 BBY) {Draw}

K'Kruhk (17 BBY) {Won}

Caleb Dune (16 BBY) {Draw}