Cuphead in Equestria

Twilight turns to Nightmare, "You think you can destroy the Elements of Harmony just like that, well you're wrong because the spirits of the elements are right here!" Twilight exclaimed as Applejack and the others stood by her.

The pieces of the elements started to vibrate glow in five different colour aura's, "What ?" Nightmare Moon ask in shock of what's happening.

"Applejack, who reasurred me when I was in doubt represents the spirit of Honesty," Twilight spoke as the Element of Honesty shards started circling around her.

Twilight then turns to Fluttershy, "Fluttershy, who tamed the manticore with compassion represents the spirit of Kindness!" Then the Element of Kindness shards started surrounding the shy mare.

"Pinkie Pie, who banished fear by giggling in the face of danger represents the spirit of Laughter," Then on cue the Element of Laughter shards circled around the pink mare as she giggle in excitement.

"Rarity, who calm the sorrowful serpent with a meaningful gift represents the Element of Generosity," As the Element of Generosity shards circle Rarity who smiles happily for Twilight.

"And Rainbow Dash, who could not abandon her friends for her own heart's desire represents the spirit of Loyalty!" Twilight finished as the Element of Loyalty element shards circle the cyan mare.

Meanwhile Cuphead started waking seeing what was going on and saw the five elemnts glowing with the five mares, he gets up and races towards them.

"The spirits of these five ponies got us through every challenge you threw at us," Twilight stated.

"You still don't have the sixth element, the spark didn't work!" Nightmare said with a snarl.

"But it did, a different kind of spark. I felt at the very moment I realised how happy I was to hear you to see you how much I cared about you, the spark ignited inside me what I realise that you are all are my friends." Twilight said at that moment the sixth element appeared.

"The sixth element," Cuphead said with wonder.

Twilight look at Nightmare, "You see Nightmare Moon when those elements ignited by the spark that resides in the heart of us all it creates the sixth element, the Element of Magic!" Twilight said as the Elements of Harmony started changing as the Mane 6 closed their eyes as a rainbow beam appeared and went straight at Nightmare Moon.

"NOOOOOO!" Nightmare Moon screamed as the rainbow light immediately engulfed her whole.

Cuphead notice the mares all got engulfed by a flash of light as he shielded himself to brace it, the light dies down as he saw all the mares on the floor unconcious. He rushes to them and help them up, "Are you all okay ?" He ask as Rainbow Dash and Applejack slowly opened their eyes.

"I'm okay Cuphead," Rainbow spoke as the boy help her and Applejack get up.

"Oh my goodness," came the voice of Rarity as they turned and saw her purple tail has restored.

"Wow, Rarity, your tail is as good as new," Cuphead said in amazement to see the marshmallow mare's tail has finally returned to her.

He then notice something else, "Whoa, girls look what's around your necks." He said as the five mares look at their necks and saw the Elements of Harmony have changed.

"They look just like our cutie-marks," Fluttershy said in wonder as the others nodded in agreement.

Cuphead turns to Twilight, "Twilight, your element has changed into a crown," he said to Twilight as Applejack and others saw the crown as well.

"Hey Twilight, I thought you were just a lot of hooey. But I reckon we really do represent the elements of friendship," Applejack said.

"Indeed you do," came another female voice as they turned and saw a yellow light appear in the horizon until it made it's way into the castle and landed in front of the Mane 6.

The light then changed into a beautiful anthromorphic alicorn princess with white skin and her mane and tailare flowing and multicolored with light cerulean, light turquoise with very light cobalt blue and pale grayish pink. She also wore a white regalia that fits her perfectly along with a crown on her head.

The five mares immediately bowed down before the princess while Twilight went up to her, "Princess Celestia," she said as she hugged the white alicorn.

"Twilight Sparkle, my faithful student," Princess Celestia spoke as she return the hug. "I knew you could do it."

Twilight looked up at her, "But you told me it was an old pony tale," she said as the princess smiled.

"I told you thet you needed to make some friends and nothing more, I saw the signs of Nightmare Moon's return and I knew it was you who had the magic inside to defeat her but you could not unleash it until you let true friendship into your heart," Princess Celestia explain until she spots Cuphead and smiles softly at him.

Cuphead was a bit nervous until he spoke, "Hello Princess Celestia, my name is-" But was cut off as the princess spoke as well.

"That's alright Cuphead, I know," she said which makes the cup look at her.

"How did you-" But he was cut off again as the princess continue speaking.

"I also saw you tagging along with Twilight Sparkle including the part where I saw you trying to slow down Nightmare, and with that I am going to announce all of Equestria that you are welcomed in our land." Princess Celestia said which makes him hug her as well.

"You're welcome Cuphead," Princess Celestia said as she returns the hug. "Now if only another will as well," she said as she then walk towards a young anthro alicorn mare with dark blue skin and has bright blue mane and tail, she also wore light blue regalia and a black crown on her head.

"Princess Luna," Princess Celestia said which causes the young blue anthro alicorn to wake up and look at her, "It has been a thousnd years since I have seen you like this. Time to put our differences behind us, we were meant to rule together little sister."

"Sister ?" Twilight ask in surprise.

"Will you accept my friendship ?" Princess Celestia ask kindly to her younger sister.

Princess Luna went up to her big sister and hug her tightly, "I'm so sorry, I missed you so much big sister!" She replied with tears in her eyes as Celestia hug her back.

"I missed you too," Princess Celestia replied.