After 41 minutes and 42 seconds of gathering reinforcements, procuring a different coloured optical sensor (green), and moving through the caverns to the city, all 56 HOT, WAR, JET, GUN, Engineers, Soldiers, and Constructors opened fire on the swarm that was rapidly overcoming the city. Gold clashed with black as Hyperion forces shot, bludgeoned, burned, exploded, corroded, electrocuted, stabbed, and slagged Changeling drones. Being the only PWR Loader, and the only 'bot capable of deflecting magic with rotating blades, I charged into the fray with blades spinning. I had set myself a few personal objectives; find the rest of my family, kill over 200 Changelings (132/200), and regain the ponies' trust. I had some trust from Cadence, Twilight, and a very tiny amount from Princess Luna, so gaining Princess Celestia's trust was imperative for Hyperion's invasion. Turning a corner, the sight of a burning building with a destroyed PWR Loader lying optical-sensor-down on the road outside meant I had recovered my original position.
INCOMING ECHO. ANSWERING.
"Kiddo, what the hell's goin' on down there?!" Handsome Jack asked, frustrated. "Are you killing 'em all without help?!"
"Changeling forces have begun attempted conquest of capital city." I replied. "Hyperion forces are eliminating the infestation."
"Woah, woah. Trying to take over a planet with an army? Not from Hyperion? Those bitches are going down. I'm putting you in charge of the 'bots down there; kill them all, then we can invade. Cool? Cool. Ciao."
Well, he seems calm about this. That's worrying.
Clearing my circuitry of these thoughts, I began to alert the remaining troopers and Loaders that were around when I was destroyed. "Loader unit SMP-5N has rejoined combat. Status report."
"Total kill count has surpassed 5,000."
"Acknowledged. Keep firing; without their hive mind, they should give up soon." Good. The troops had motivation; the small insects were coming in slower now, rather than turning the skies black. I remembered why I'd returned to my death site, and that was to find the Princess. Quickly, I engaged my scanning mode, picking out 364 non-pony forms of life, and the rest were cowering. Ponies, then. The nearest were just through a nearby wall, so I let loose a massive stomp, dislodging a cracked chunk of wall. Through it, I rapidly charged in, blades spinning, and caught 4 Changelings by surprise.
"ENGAGING." I growled, spinning my blades up to 500RPM, advancing forward, and grinding one of the bugs to a green spatter up the wall. The other three, confused and terrified, began firing blasts straight at my rotors. Said blasts promptly reflected, one of the reflected green shots promptly nailing one of the hostiles right between the eyes. He looked horrified as the corrosive material began to sear and eat away his chitin. He let out a piercing scream, falling face first into a pool of his own blood. The other two hissed in a series of clicks, before turning...tail(?) and fleeing through a broken doorway. Satisfied, I turned my upper body around to face a green unicorn mare with golden eyes, clutching a vanilla earth pony mare. Both had equal looks of terror on their faces.
"Have a happy royal wedding." I said calmly, before stomping out of the small house. Behind me, the 2 tonne Loader with destructive, bloodied blades for hands, two small ponies passed out with a thud.
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"You're back soon." Celestia growled from within a pack of heavily armed guards. With the invasion repelled, and Hyperion calmly and brutally executing the remaining Changelings, I had returned to the chapel alongside 6 ponies claiming to be 'The Elements of Harmony', Cadence, the two RPG Loaders from earlier, the soldiers from earlier, and, of course, my father. The bulky Constructor was judging everything in the city, looking at guards for about five seconds each with a worrying intent, before letting out a grunt noise. Our arrival triggered some linchpin that got all of the guards to whip out spears and aim them at we Hyperion troops. "Are you finished destroying my city?"
"Yes." I replied calmly. "I also encountered my father, your sister, 2 small home owners who now bear PTSD, 7,153 Changelings, that bitch whose head I squished, and Blueblood. We are finished."
"Wait," Celestia cut in, stepping out of her guards and in front of me. "You have met my sister?"
"Yes, I met and fought alongside your sister. Might I say she has fine skills with a blade."
"Well, did she not try to destroy you?"
"Yes."
"That's a lie."
"How?"
"You're still alive."
"I explained I was originally human, and she said we would discuss later. I have not seen her since earlier, and now is later."
"She's most likely sorting something out. But...I suppose I owe you thanks."
"For defending you?"
"For defending Equestria. If it weren't for your army's intervention, Equestria surely would have fallen."
"Do not thank me. Thank my father for making me." I gestured wth a blade to my father, who had planted his trio of legs sharply into the carpet and obliterated the floor below.
"Playing sound file #120698." MIC-K3 said. "Heyoooooooo!"