The Sith Lord of the Gem Empire.

Chapter 2:1: Arrival

Yellow diamond sat in here command room, once again, Lord Vader had shown promise as a potential weapon.
First, the eradication of a gem scouting squad, then, nisan, now, Vader had help win a victory against enemy forces in space.

Yellow aslo had realized that Vader wasn't some common soldier, he was a commander of that war ship, meaning whoever he answers to, will want to find out what happened to him. She and her fellow Diamonds would have to tread carefully, or else, they just might start a war, a war, that Yellow did not want to fight.

Vader sat once more in a meditative state in the room that was offered, his mind revolved around the his current actions and to where it has led him.
He would soon arrive on this planet known as homeworld, this only further developed his suspicion that he wasn't in the same galaxy anymore. However, these diamonds did not seem to know that Vader wasn't from their galaxy, nor did they know his order, or why he has these powers, all they know is that he is a commander of sorts, and human.
I shall keep it that way for as long as I can. Vader thought to himself.

Homeworld, White and Blue: "White, we cannot allow such a monster on homeworld!" Blue shouted through the communicator.  "I understand your concerns Blue, but, we have him outnumbered, our courts are preparing for him as we speak, and all four of us shall be there, I doubt even Vader can take out the combined might of four Diamonds and our courts." White spoke calmly in contrast to Blue.  "You don't understand White, that thing will only bring homeworld's destruction, the subjugation of our species!" Blue said.   "Tell me Blue, how do you know what Vader's presence will bring down upon us?" White asked, "Multiple of my sapphires have seen the same vision White, that hasn't happened in thousands of years and only happens when something major is forming in the future! I'm telling you that Vader will only bring us our doom."

White and Blue continued to argue until White heard something come into her chamber, it was her Pearl, "My Diamond, Yellow Diamond will be landing on homeworld in a few minutes." "Thank you Pearl, I'm guessing your Pearl has informed you as well Blue?" White asked, "Yes, but, this discussion is not over." Blue said while turning off her communicator.

The courts and Diamonds of homeworld prepared for the return of Yellow diamond and her guest, gem types of all kinds stood in vast rows waiting with anticipation, they were all in a salute that shaped the Diamond symbol.  The landing pad in the center of homeworld's city was prepared for the arrival of Yellow diamond, her fellow Diamonds all waited in visible elevated spot, all three also standing, with their pearls being the only gems not down there with the rest. The gigantic ship was spotted and soon was landing on the pad, the first to step out were Yellow's soldiers and Pearl. Yellow Pearl stood in front and shouted "All stand for the luminous Yellow diamond!"

Soon enough, the Diamond herself stepped out of her ship, next to her was Vader himself.  The other Diamonds took notice of Vader before any of their gems did.  Yellow diamond was praised in adoration by the gems, however, when Vader was visible, a cold silence fell over them.
Vader's haunting stare swept over the crowd, some of the gems even shuddered at Vader's glare.  The silence was broken when White loudly welcomed her fellow Diamond back home.  Yellow regrouped with the other Diamonds in the palace, Vader still at her side, walking right alongside Yellow Pearl(much to her dismay).  Vader did not say much, he simply observed the area around him, he took in the details of the palace while White diamond was leading the group, showing Vader around the palace.  After that, Vader would stay in a room made for him in the lower end of the palace, ah yes, another prison, the dark lord thought to himself.

Pink diamond watched Vader with interest, so, she and her Pearl followed him to his room before any of the other Diamonds could notice.
Vader felt something following him, but, when he turned around nothing was there, this continued on for a good portion of his way to the room made for him, his patience was starting to thin.