Possibilities 2: Angel of Equestria, Alternate

For every Incarnate soldier he killed, five more would take their place.

"Yakuzo, to your right!" Leo shouted as he struck down another soldier.

"Got it!" Said a man clad in golden armor and wings made of the rays of the sun as he cut down a juggernaut with a sword of light. Leo showed no signs of wearing down, but he needed to end this. Everyone back home was counting on him and his brother.

Leo was so busy cutting down soldiers, he failed to notice the Dreadnought coming in from the right. It was massive. I took the shape of what seemed like an Ashworm (If you played Darksiders, you know what I'm talking about) but several times larger. Leo flew upwards on wings as black as the moonless sky. He summoned a greatsword that he knew as "Godslayer" that had a silvery glow and plunged it into the skull of the Dreadnought. The Dreadnought wailed in agony as countless mystical blades entered it's skull. Leo flew off and summoned another being from a portal.

This being was saurian in appearance. It had an oversized golden gauntlet on its left arm, a katana in the other and black wings and tail and a single red eye in the center of its visor-like eye.

"Schatten, we're gonna need help. Open the gate!" Leo commanded.

"Thought you'd never ask." Schatten said with a devilish grin forming on his saurian features as he flew down and released a massive shock wave of darkness. From the darkness came thousands upon thousands of soldiers, soldiers of the highest caliber and ferocity.

These soldiers were meant to hold back the Incarnate while Leo planted the bomb. Leo flew off towards the base along with his brother, only to be stopped by a Harbinger. The Harbinger was at least three times the size of the Dreadnought and five times as dangerous. It looked like Godzilla on steroids (You know what? Lets call him Roidzilla).

"Leo! You go! I'll take care of this!" Leo complied and flew off with the bomb. Yakuzo flew forward, dodging a claw swipe from Roidzilla. Yakuzo took on his incomplete form of Deus Ex Machina and drove a blade of light into the wrist and extended it through the wrist to the other side and swiftly yanked it away. Roidzilla roared in pain as its hand came off and fired a laser from its mouth to try and vaporize the pest.

Leo flew into the base to see it surprisingly empty. Why would their main base be empty?

"No, stay focused." Leo said to himself as he flew to the center and found none other than the Great Destroyer himself.

"Ah, you must be Leo. I have heard a lot about you. My name is Droog'Vas Orak." Said the Destroyer.

"I heard of you too, asshole." Leo spat as he subtlely planted the bomb, which was no bigger than a baseball, and set the timer to 20 minutes.

"My, such a filthy mouth. And more than enough power to kill one of my Harbingers without so much as acknowledging its existence. Such a shame. You would have made the perfect successor." Orak said with a calm but malicious voice.

"If only you would-" Orak was cut off by Leo firing condensed energy into the wall behind him.

"That's one of the things I hate about all the evil types. Fucking monologues." Leo said as he charged forward with his black claymore, Seraph, poised to strike. Orak parried the strike with his own blade. It was a longsword made of some kind of monolithic metal.

"Like my blade? I forged it-"  Leo cut him off again as he jumped back.

"ENOUGH of your fucking weird, fucking rambling SHIT! SHUT UP AND DIE!!!" Leo shouted, finally losing his patience after three years of fighting rambling and arrogant Incarnates, as he released his Death Incarnate form.

Leo had a blue and silver robe with a hood covering his black hair and red eyes. He had large black wings that looked like they held the death screams of trillions of souls. His scythe was black and red with the blood of the dying and the scythe had a hook extension on the blade that pointed where the blade was pointing. Leo charged forward, ever silent in his malicious onslaught. Orak had parried many of the attacks, some of them scratching his armor. Leo dug his scythe in the ground and pulled it towards Orak and out of the ground, releasing a wave of black and red hellfire. Orak dodged and swung his blade at Leo, which he blocked with the shaft of his scythe.

"Despair." Leo said in an ominously dark voice as he brought the scythe down on Orak. Orak couldn't block in time and was hit by the blade and recoiled at the sight of his blood.

"Impressive. No one has ever-" He was cut off again by Leo, now in his Dark Juggernaut form slashing at him with a bladed hand. "What the fuck did I just say, asshole!?" Leo roared as he turned his hands into scythes.

Leo brought his scythes down with unsurprising force. Orak dodged and swung his blade at Leo, expecting the sound of bone-on-steel............ But it never came. Instead, Leo stood there doing nothing with the blade simply pressed against his side.

"You'll need to do better than that if you want to kill me!" Leo said as he swung his scythes in a circular pattern, knocking Orak back. Orak decided it was time to end the fight. Orak brought out a trident the color of blood.

"It ends here, Angel." Orak said calmly as he brandished his weapon of choice.

"You know, what you just said was shit tons better than your stupid monologues." Leo said as he shifted into his incomplete End Bringer form. His body was covered in armor the color of the empty midnight sky and sigils that were glowing with a light the color of the sun. His legs bent backwards (like Schatten) and he was given blood red horns that pointed forward with sharp tips. His wings were more like large, bony protrusions that could shoot energy out and form wings to compensate for the lack of them and his tail ended in a vicious three pronged spike. They clashed with Leo summoning a magma-like sword and slashing at the spear.

In Ponyville, Pinkie's tail was twitching like crazy.

"Ooohhh! Twitchy tail! Twitchy tail! I have to tell Twilight!" Pinkie said as she bounced out the door and toward the Library.

Twilight was busy reorganizing the books with Spike as Pinkie burst through the door, knocking down the books that Spike was reorganizing.

"NOO! All my work gone to waste!" Spike cried out.

"It's okay, Spike. I'll help you fix it later." Twilight reassured the baby dragon as she moved to meet her friend at the door.

"Hey Twilight!" Pinkie said in her ever so bubbly attitude.

"Pinkie! You're tail is twitching!" Twilight said.

"I know! That's why I came to tell you! Something big is gonna fall! Like bigger than when that piano fell on you!" Twilight grimaced at the memory.

"Alright, lets gather the girls. We have to be ready for anything." Twilight said as they moved out the door to find their friends.

Back with Leo, he was fighting a downhill battle. Leo was injured, but not enough to hinder his onslaught. Orak was getting his ass handed to him. Leo finally brought his blade down on Orak and ended his life by stabbing him in the chest with his magma blade.

"Burn in hell, motherfucker." Leo spat on Orak's body.

"Leo!" Cierra called on Leo's earpiece.

"What's up?" Leo asked as he shifted back to his original form.

"That bomb is set to engulf! It's gonna take the whole building down with a black hole!" Cierra said and Leo's face fell.

"What." This wasn't so much a question, as it was him begging her to tell him she was joking.

"Get outta there before you get-" Before Cierra could finish her sentence, a huge wave blasted from the sky and short circuited the Incarnates and the sound not unlike the screech of an airlock opening is heard on the other end of the earpiece. "-sucked....in..." Cierra said sadly.