1000 years ago
A small black alicorn colt ran through the halls of the royal pony sister's castle. The young colt had a light blue messy mane and tail with strands of white hair that dimly glow, his mane and tail were not too short or long, and his eyes were light blue splits, and his wings were bat like. The young colt was a rare breed of bat ponies and alicorns due to the fact that both types of ponies are rarely born or seen and a mix between the were never heard of. The young colt was running towards the throne room because his mother was none other than Princess Luna and together they ruled the night sky as mother and son.
As he entered throne room he saw his mother as she was about to fight his aunty Princess Celestia who ruled the day. "My child your right on time" his mother said wanting him to stand next to her. As the colt walked over to his mother he started to change. He became slightly taller, his mane and tail had completely gone black and his once bright blue eyes had gone crimson red. "W-hhat has happened to you..."Celestia said but was cut off before she could say his name. "I don't gone by that name anymore it's Nightmare to you!" Nightmare shouted.
He watched his mother and aunt fight and when his aunt was defeated he joined his mother by her side. But his aunt used the Elements on his mother but he was caught in the blast not only banishing his mother but himself as well.
Celestia looked up at the moon as the shapes of a colt and mare appeared on the moon. "W-What have I done?" she said as she began to cry. "A-A-Am nothing without you two, and now Galaxy will never be able to grow up for a very, very long time"