On the balcony leading to the Princess of the moon's private quarters in Canterlot castle, a lone pony stood guard ready for any and all issues that may arise for his beloved princess, however, he was no normal pony.
Just a short two years ago he was a changeling, well he technically still was a changeling but he was a Rogue, an outcast, he left his once home to serve a higher purpose and he was loving every moment of it.
Now he stood as a white unicorn with a light grey mane with red streaks in it, along with purple eyes the same color as those of his changeling form, he at one point wanted to change them to a different color if for no other reason than to forget his past, however, now he has grown to like them especially after what she said.
Once a mortal enemy of Equestria, but he now watched over his new home to protect it from enemies and any outside dangers, his name is Moon Aegis but he used to be called Untz, Odd name change but it suited him just fine.
As he stood on guard he began looking back over the last few years of his life and began pondering exactly what brought him to this moment, he smiled as he recalled exactly how he got to where he is today.
(2 years prior)
During the attempted takeover of Canterlot, Untz lost his reason for fighting the equestrians, especially after seeing how hard the ponies fought back against Queen chrysalis, deciding that he wanted more in his life he wanted to do something more than just survive, he wanted to live.
During this time he decided that he wanted to fight for Equestria instead of against it, so he changed his form into the pony that he is now, a white unicorn with a grey mane and tail with streaks of red in it the only part of him that was unable to change is his eyes, he could never find out why they would no longer change but they are stuck as his original purple no matter how hard he tried.
At one point during the fighting a bright pink light stuck him and the other changeling he was fighting against, however, instead of being throw like his previous allies were, he was knocked unconscious only to awake in a hospital surrounded by guards, once the doctors were sure he was alright he was confronted by the two sisters, Princess Celestia and Her Sister Princess Luna.
During the interrogation he was terrified not knowing what the sisters would do, he had been told his hole life by the queen that they were tyrants and would sooner kill him than give him a chance at explaining or even awakening if captured, however, as he was awake and looking at them now he figured that that was just another thing that his former queen had lied about.
While looking at the sisters nothing was said, however, he did notice Princess Luna the dark blue alicorn with a moon for a cutie mark staring at him, but not with hate or malice but with curiosity, Thinking to himself he wondered what she was thinking, why was she staring at him what did she want?
While strapped to the bed, he made no move to fight as he was willing to accept his fate, better to die here and know that he fought for something bigger than himself rather than struggle to just survive. But when The princess of the sun spoke she just asked one question, "why"?
Untz took a breath while looking at the rulers of the nation he and his kind just tried to invade, after thinking for a moment he let out a sigh, and in his raspy voice said "I could not stomach what some of my fellow changelings were doing, attacking foals and females, I may be a changeling myself but when I saw this something just snapped, the look on the foal and I guess her mother's face was one of terror I have never seen, she was fighting so hard to protect the foal, we changelings need to feed on emotions there was no reason to pursue and try to harm a child."
The princesses looked at this odd changeling with mild shock while they knew how a changeling gained sustenance from emotions they had also never seen one that held back during a fight and never had they seen one turn on there own kind before.
Celestia looked down at the changeling "What of your Queen, you know what she will do if she finds out what you did."
Untz closed his eyes "yes I do but I can still not even think about harming a child."