Captain Rex in Equestria

"FROM A WAR TO ANOTHER"

Rex was finally outside of the prison, but his torment was not over, as strange bugs were attacking the city and it's habitants. Although they locked him up, Rex could not leave the creatures on their own, so Rex came up with a plan.

The bugs were too distracted to notice Rex shooting, managing to kill a few before they realized his presence. They attempted to attack him, but with Rex shooting them, they weren't able to approach him.

Rex was shooting at all the bugs he could, and he found out that they weren't too much of a challenge. But after a while, they started to shoot back at him with some kind of green laser that came from their horns, forcing Rex to take cover behind a wall.

While Rex was shooting the bugs, he was able to see civilians running from invaders. "Take cover!" He shouted at the civilians. Unfortunately several civilians were hit by the green lasers coming from the bugs.

'Getting out of a war and ending up in other, that hilarious.' He bitterly thought while he was changing power packs to his blasters.

The lasers were still coming, and they were about to destroy the wall. One streaked past, barely missing him. 'Damnit!' Rex thought, firing a couple of shots at them.

After taking cover again, another shot almost hit Rex's head. 'That was close!' Thought Rex before throwing a grenade. A few seconds passed and before it exploded. Rex could hear screams of death, but the lasers don't stop coming.

"They're still coming and coming! I can't stay here!" He said, before starting to run. He kept shooting while looking for another place to get some cover.

While he was running, Rex could see one little creature from those that live in the city. A kid, Rex assumed, but it was running from the bugs. Rex had to do something, so Rex ran to the kid while dodging all the lasers.

When he finally got to the kid, the little one was scared of Rex instead of moving. Rex grabbed the kid and continued running, avoiding the lasers that were impacting the street.

"Where the hell are the guards?!" Rex yelled.

Rex was carrying the child with one hand and firing his blaster with the other, shooting the bugs he was still running from. When he saw a house with the door open, he got an idea.

The kids was screaming with fear. "Calm yourself kid! We are almost there!" Rex said, attempting to calm down the little creature.

Rex start to run faster and faster, until he ran past the front door. Once inside, Rex drop his last grenade, and before all the were able to get inside, Rex ran out of the house through the back door.

Once he got out with the kid, he turned around to see the house blow up with all the bugs chasing him inside. Rex smirk under his helmet; they were safe, for now.

Rex was just looking at the burning house, thinking. "What's happening? An invasion typically focuses on key points, not tormenting the city." He muttered. After a few moments, he decipher what was happening. " Unless they have already taken over the city! If I want to avoid more civilian deaths I must go to the castle. I have to end this." Rex said with a long glance at the castle.

Then he turned to look at the kid. 'First I have to make sure the kid is safe.' He thought.

"Are you ok kid?" Rex asked the little creature, even if he knew that the kid can't understand him.

The kid gave a look that plainly said how afraid he was.

"I guess that's a yes." Rex muttered.

'If the general or the others could see me like this.' Rex thought.

Then Rex stealthly started to look around for a safe place to leave the child. After a few moments Rex found the gates of the city.

Outside was a station, where there were many of the creatures evacuating the city.
Rex decided to put down the kid, but the kid just looked at Rex with a curious face.

"You must go with the others." Rex said, pointing to the gates. He could leave the child there, but Rex didn't want to be seen by the creatures.
After a few moments the kid finally understood what Rex was saying, and the little one ran to the station.

"Great now, get back to business." Said Rex, and then he started to make his way though the hordes of bugs, heading towards the castle.

Rex was running through the streets and firing at all the bugs in his way, until he finally got to the doors of the castle. But when he got inside, there were more bugs inside.

"Here we goes again!" joked Rex before starting to fight again.

____________________________________________________________________________________________________________

While Captain Rex was fighting the bugs, the mane six and Candace where trapped in the Castle by Queen Chrysalis and her changelings, Celestia was knocked out, and Shining Armor was unconscious.

Queen Chrysalis was laughing. "Ha ha! Finally, Canterlot is mine, and not even the Elements of Harmony will be able to stop me!" She said, gloating over her victory.

"No! Canterlot is still fighting!" Cadence protested.

Chrysalis just laughed more. "You are wrong with that, little princess! All the guards are already captured" She declared.

Rainbow Dash interfered. "I'm still here you know!?" She shouted.

"Ha ha! Like I said before, nopony can stop me no-" Chrysalis was interrupted by a boom and the scream of pain that followed.

Everyone in the throne room turned to see a dead changeling on the ground and standing in the door was a tall, white, bipedal creature. Everypony was in shock, nopony knew who he was, except for Twilight. 'It's the alien! How did it escape from prison?' She thought.

Rex analyzed the situation. 'I guess the tall and ugly one must be the leader of the bugs, better take down all the hostiles before getting to it.' He thought.

Chrysalis stared at the alien with anger, but before she could say something, the alien shot another laser from a piece of metal, killing another of her changelings.

After that, all the changelings charged the alien, but the alien, with another of his pieces of metal, started to shoot every changeling in the room, killing them all.

Twilight was impacted, do she really pass time with an alien killer?
Applejack fell fear and hate for the strange creature.
Rarity felt disgusted.
Fluttershy wanted to cry.
Pinkie Pie felt strange about the alien.
Rainbow Dash, even though she didn't want to show it, she felt scared of the alien.
Candace feel terror about the alien.

Chrysalis wanted to kill the creature, she doesn't care who he is, the only thing that matters is that he kill many of her children, and he's gonna pay.

Before Chrysalis could shoot a magic beam, Rex, with his other blaster, shot another laser at Chrysalis' horn, causing an explosion where the laser connected to the horn. Chrysalis, eyes widened in shock, but she was too distracted by the pain in her horn to notice Rex approach.

For that, she gt a punch to the face that knocked her out.

"Disgusting creature." Rex spat.

The ponies just stared at the alien that killed the changelings, knocked out Chrysalis, and saved them, but they were still afraid of him.

The alien grabbed Chrysalis and put her besides Twilight and the others. The alien just stared back at the mane six after that.
Rex was able to see that they were scared of him. 'Maybe they will feel better if I salute.' thought Rex before put his hand to his head and make a military salute, then left the room.

The ponies just stared at him in shock.

Twilight was the first to react. "Wait!" She yelled to the alien, but before they could try to stop him, he was already gone.

TO BE CONTINUE