From Reach to Equestria

Location: Crystal Mountains, Crystal Empire

Noble 6 gazed with awe at the large structure that was visible in the distance, It clearly wasn't made by the Forerunners, the structure looked as if it were made of solid crystal, Noble 6 decided that he would investigate the crystal anomaly if it was not all in his head and so he started moving in its general direction, as he approached the structure the air got colder and the structure started to resemble a city made purely out of crystal.
the closer he got to the city the more dark storm clouds appeared until snow started falling, upon reaching the city Noble 6 had a strange feeling about the city, "Something feels off about this place," he thought as he proceeded to put his helmet back on and drew the magnum he had by his side.
"An interesting thing you are" a voice said from nowhere in particular, this voice was different to Noble 6, he didn't recognise it so instinctively Noble 6 scanned the area before a grey unicorn stallion appeared in front of him, The unicorn charged his horn and shot a beam of crystalline magic towards Noble 6, the magic beam hit Noble 6 dropping him onto his and froze him into a dark crystal before the crystal exploded.
Noble 6 eventually heard a Feminine voice yell, "King Sombra you will not get away with this!" the voice belonged to pink alicorn and behind her was a group of 6 mares and a white unicorn stallion, the pink one ran towards Noble 6 and helped him get off his knees as the others ran after King Sombra,"Are you... ok?" the pink one asked eyeing him up and down, Noble 6 responded with a simple, "No time for greetings, lets get this son of a bitch."

Location: Crystal City, Crystal Empire

Noble 6 dashed towards the general direction that King Sombra and the others ran off to, there was only one thing going on in his head, revenge.
Eventually Noble 6 did find King Sombra and the others, and luckily for 6, King Sombra was being distracted by the mane 6 and the white unicorn stallion.
Noble 6 decided that he will not waste the last 3 rounds in his magnum so he took the opportunity to traditionally drop kick Sombra, King Sombra retaliated quickly by firing a blast of dark magic at Noble 6 which hit him and crystallised his lower arm, which 6 used as a weapon and slammed his crystallised arm down upon Sombra's face, the crystal shattering freeing 6's arm and breaking Sombra's nose.
King Sombra tried to get back on his hooves but as soon as he did Noble 6 did an uppercut right into his jaw knocking him back onto the floor, Sombra tried to get back up but the beating he was receiving was tantalising.
Sombra curled up into a ball and didn't even try to fight back anymore, it would be futile in the end if he did as his magic doesn't work against the metal ape creature so Sombra decided to flee the empire after his defeat.

Location: Equestrian border, Crystal Mountains

The ponies asked Noble 6 is he will go back to Canterlot with them to inform Princess Celestia of Sombras, he agreed as he did not know where else to go and a deserted city wasn't exactly a functioning civilisation, while the group were traveling towards the pony capital Noble 6 was stuck in thought as he remembered how the Stealth expert of Noble team just disappeared, he never knew if Jun-A266 made it off planet safely, he didn't dwell on the thought, he even didn't know if he was dead, "Is this real, am I even alive right now? I seen many aliens in my life but never have I seen taking ponies," he thought to himself as he walked along with the group.
Princess Cadence tried to lighten the "anyway my name is Princess Mi Amore Cadenza or just Cadence for short, You never told me what your name is," Cadence suddenly said to break the awkward silence, he didn't even turn his head towards Cadence before he responded, "Noble 6 or 6 for short at your service."
The group were still walking towards the general direction of the pony capital city before Cadence broke the silence once again by saying, "What are you anyway? I never seen anything like you before," Noble 6 thought for a moment of what his response would be, "I am Human, I am a Spartan which is basically a genetically modified super soldier for the UNSC" He responded to Cadences question, they continued walking towards a train which Noble 6 presumed that they used to get here.

Location: Canterlot Castle, Canterlot, Equestria
Noble 6 walked into the Large castle along with Cadence and the unicorn stallion who Noble 6 found out to be Cadence's husband who was named Shining Armor, The other 6 ponies got off in a small town not that far away from the capital city.
Noble 6 also learnt that the pony capital city was named Canterlot, he found the name Canterlot, for a city was rather ironic, "If the capital city is called Canterlot I wonder what the other cities are called," he though to himself, the last thing he needed was having to fight the ponies because he made fun of the way they named things.
"Well here we are," said Shining Armor gladly, he was exhausted after the restless 8 hours he got on the train back from the Crystal Empire, it also, was rather late, Noble 6 asked the two ponies for the time and Shining Armor responded with "It's 10:47 PM," Noble 6 also needed this information to manually set the Time Zone for his helmets HUD it would have done that automatically if his helmet wasn't damaged.
"Greetings niece Cadence and Prince Armor, our sister is currently asleep and do tell us that the battle against King Sombra was a success?" a larger dark blue alicorn asked, the alicorn looked towards the two ponies before noticing Noble 6, "Ah yes and the Human that assisted them "We are Luna, Princess of the night, our niece has mentioned thou in her letter to us, and we wish to discuss details of what happened in the Crystal Empire however tis late now and we bet that thou have nowhere to stay," Luna said to Noble 6 as she wrote in a scrolls and sent it off with a flash, not long after a Pegasus maid approached Noble 6 before saying, "Sir let me lead you to the guest chambers," Noble 6 followed the maid until they reached the room and the maid opened the door and went back to doing whatever she was doing before hand.