As the beast turned around, saying Celestia was horrified could be a rank understatement. The creature had a frail, yet powerful look to it. It had had a shriveled up, scaly hide that was almost black. It had powerful hind legs and two frail looking arms. It had four tentacles with transparent, glowing spike on the end and they seemed to move in pairs. The tail seemed almost like a receptacle for something with four prongs on it. Its head had three horns on it, the ones on the sides were a bluish-grey, while the one in the middle was significantly shorter and golden. A pair of mandibles covered the sides of its jaws with huge serrated teeth protruding from the tops. They were the same color as the outer horns. The eyes glowed bright yellow and Celestia felt a wave of emotion come over her as she met its gaze.
DEATH PAIN SORROW ANGER VENGEANCE LONELINESS FEAR!
She averted her eyes quickly to escape. Kyurem just glowered at her for a moment, before opening its mandibles and jaw to pop the lightning bolt into its mouth, immediately the dragon started to transform, its arms growing larger and stronger, its right side turning black and blue, a pair of wings sprouted from its shoulders, the right one black and the left one grey white, while two of its tentacles turned bright blue, making for the back. From the receptacle a black tail sprouted, sporting a two large black bands, one near the receptacle and the other towards the end, this one having four fins. The blue tentacles connected with the band near the base, filling the rest of the new tail with a crackling electric blue energy. The suddenly less husk-like dragon was now standing nearly fully upright. Its horns grew slightly longer, and its right eye now had a pupil and iris.
The princess stood in shock of the new transformation for a moment before quickly ordering a detachment squad of royal guards to surround Kyurem.
"What is the meaning of this, strange beast?!" Celestia called. Unlike last time, this time Kyurem actually responded intelligently.
"THE SPARKS OF FIRE AND ELECTRICITY. I MUST CONSUME THESE TO PREPARE FOR THE SPARK OF LIFE, TO COMPLETE ME AND RETURN THE SOUL WHICH IS LOST." It answered.
"What do you wish to be called, creature?"
"KYUREM" It replied simply.
"Kyurem, you have committed crimes against the kingdom of Equestria and must be brought to justice. Will you come quietly, or must I have my guards force you to?"
"THE COMPLETION MAY NOT BE POSTPONED." Kyurem replied before teleporting to the room on the other side of the hallway, bringing another boom and some screams of surprise. Celestia just shook her head sadly before trotting out of the room with the twelve guards behind her.
Kyurem appeared in Celestia's personal gems room which was similar to the other one except for the fact that it was more vibrantly colored and instead of shelves full of gems, this one only had three. Grabbing the uppermost and centered of the gems, It popped it into its mouth in a similar fashion as before, but this time with a different reaction.
Its two remaining tentacles turned orange and made for the back similar to the blue ones. A black stripe divided the middle of Kyurem's tail as the orange tentacles connected. The left side of the tail turned orange as well, spitting out flames before calming down. Wings sprouted from the forearms, the left one pure white while the right one bluish-gray. A feathery streamer-like extension to its left horn accompanied the black and blue extension on the right. The ends of the wing and horn extension glowed a dangerous red and its left eye had a pupil as well now.
It sent out a pulse to locate the spark of completion. Upon finding it, Kyurem teleported near it, just as Celestia and her guards rushed in.
Princess Twilight Sparkle had spent the time between Kyurem's disappearance and when it arrived again. It picked up Twilight immediately. She let out a cry of pain, to which Kyurem just clicked its jaws confusedly. The spark was supposed to be another gemstone right? Why was it being directed to a pony? Kyurem pondered the question for a moment before being interrupted by a wave of heat washing over it as Celestia let loose with her full arsenal onto Kyurem's back. When the dust cleared, Celestia's jaw dropped. She had expected the dragon to at least be injured, if not dead. Instead it just looked at her like a minor annoyance and coughed up some water, before turning back to Twilight, only to discover that her eyes and horn lit up like beacons. A huge stream of energy was let loose through her horn, surrounding both of them in a purple orb of light.
"Twilight" woke up a couple minutes later, feeling achy and tired. "What happened? She asked, looking at Celestia, who had a mortified expression on her face. She turned her head to look the other way to see a young purple alicorn princess slowly waking up. She opened her eyes. She screamed at the top of her lungs, causing "Twilight" to scream too.
"M-m-m-monster!" she screamed, getting to her hooves and galloping away at full speed.
Celestia watched the behemoth in front of her rise after it let out a shrill scream. Its uncovered scaled hide was almost jet black. Its eyes were deep purple with large black pupils. All the bluish-white parts of its body were a light purple, the same color as Twilight's coat, and its golden horn was also a dark purple. It turned its head towards Celestia and said: "Why do I have a doppelganger, Princess?" Celestia blanched.