LooneyAces here. I have returned. Happy 13th Dannyversary. For those that has been following my DPxMCU series since I published GHOSTLY AVENGER, we now come to the Danny Phantom Phase 3 story you've all been waiting for. So what better way to celebrate the Dannyversary by publishing this story. This story is also inspired by another Danny Phantom story I've read before called The Ultimate Reality Clash by Major144 in some cases. To those that hasn't follow my DPxMCU series, I highly suggested you read these stories in the following order before reading this one because this is a story I have been setting up since since Day 1:

GHOSTLY AVENGER.

DANNY PHANTOM: THE ASGARDIAN DRAUGR.

DANI PHANTOM: THE ROGUED DRAUGR.

GHOSTLY AVENGER: AGE OF ULTRON.

GHOSTLY AVENGER: CIVIL WAR.

THE FENTON CHRONICLES.

Disclaimer: I do not own Danny Phantom and its characters. They belong to Butch Hartman and Nickelodeon. Because a few Marvel characters will, I repeat, WILL appear in this story and this is a crossover of Danny Phantom and the Marvel Cinematic Universe, I also do not own the Marvel Cinematic Universe and its characters. They belong to Stan Lee and Marvel Studios. Danny and Dani's appearance and second Phase 3 uniforms is on the cover photo, which I drew them. The fictional characters are mine though.

Well everyone, this is it. The story you've long been waiting for. I present you DANNY PHANTOM: THE ULTIMATE RETURN. On with the story! :)

Prologue: Planning for Revenge.

[2011]

In the Ghost Zone on March 24, 2011, 16, soon to be 17, year old Danny Fenton, aka Danny Phantom, was trying to get all of the denizens of the Ghost Zone to help as both the Ghost Zone and the Earth are in danger of being destroyed by an asteroid called the Dis-asteroid. At first, the ghosts didn't want to listen, but Danny managed to convinced them all to help him out. Meanwhile, inside Clockwork's Tower, as the ghosts, Clockwork included, are about to go through a natural portal to Earth to help Danny, there was a dented Fenton Thermos. Inside that thermos was probably one of the most powerful and evil ghosts that Danny ever faced. This ghost was an evil, twisted, and the future version of the hero. His name is Dark Danny, or better known as Dan Phantom. Dan Phantom had nearly wiped out the world and all Humans. He was so destructive, murderous and cruel that the Observants called upon Clockwork to destroy Danny Fenton when he was 15 years old, so that he can never become Dan.

However, Clockwork did a different approach. Instead of destroying Danny, he got him to travel to the year 2019. There, Danny had a short battle with his evil future self, but he ended up being thrown into the Ghost Zone while Dan went back to the year 2009 so that the events that will lead up to his existence happened. Danny, however, managed to get back to his time period thanks to the help of a former enemy and fought Dan, who was trying to kill his family, friends, and teacher with a exploding burger joint called the Nasty Burger. Before the final battle, Danny learned of a new power called the Ghostly Wail. Needless to say, Danny surprised Dan with the Ghostly Wail before sucking him in the thermos. However, the Nasty Burger exploded, but Sam, Tucker, Jazz, Maddie, Jack, and Mr. Lancer were all saved by Clockwork.

Clockwork took Danny back in time so that he can have a second chance to make the right decision, thus preventing him from becoming Dan in the future. However, unknowingly to Danny, Clockwork took the thermos and hid it in his tower. As a result, Dan now exist out of time. Dan was furious now that his timeline no longer exists. For two years, Dan has been working effortlessly to escape from the thermos and exact his revenge. Today was the day.

While the ghosts were at Earth, saving it from the Dis-asteroid, Dan has been punching and blasting the walls of the thermos, making it dent, before it finally cracked. With one final ecto blast, the thermos exploded, finally freeing Dan.

"Finally! Free at last!" Dan said before looking around to noticed that there was no ghost around, including Clockwork. "Where is everybody?" Dan said before noticing one of Clockwork's monitors.

Dan looked at the monitor and saw Danny and the ghosts, including a little girl that looks awfully like Danny, working effortlessly to turn the Earth intangible as the Dis-asteroid passes through. Dan looked in disgust before noticing another monitor and a open book. Dan grabs the opened book and reads it. It talks about an ancient ghostly artifact called the Universal Gauntlet, which it can give the user power and control reality, just like its twin the Reality Gauntlet. However, unlike the Reality Gauntlet, which uses four Reality Gems, the Universal Gauntlet uses six Reality Gems.

"Impressive, and it's somewhere in the Ghost Zone. With this gauntlet, I will turn Danny's life apart and get my revenge." Dan said.

Dan was then interrupted by the monitor. Dan looks at it. The monitor shows Amity Park, what appears to take place in a future just like his timeline.

It is the year 2027 in Amity Park. It isn't technologically advanced like in Dan's timeline, but it has advanced anti-ghost weaponry, like the very large ghost shield that is protecting the whole city. Riding a hoverboard over the city is the Avenger name Valerie Gray, better known as the Red Huntress. Now older, Valerie serves as the sole protector from ghosts. Valerie waved to a couple of kids before flying towards and land at one of the ghost shield's towers to inspect it.

"Ghost Shield Tower 9 is 100 percent operational." Future Valerie said to her father Damon Gray. Damon appear on the small screen on Valerie's watch. He was wearing a purple suit. He had a eye patch on his right eye and was missing his left arm, just like in Dan's timeline.

"Great sweetie. Check the last tower and get back to-" the transmission is suddenly cut off, which worries Valerie.

"Daddy? Daddy?" Future Valerie called.

Valerie however didn't hear from Damon. Instead, the screen showed a black background and two red eyes before hearing a familiar feminine voice as she said...

"Hello Valerie."

"You again?! I don't care how powerful you are, ghost. A sell out and traitor like you can't break through the shield." Future Valerie shouted back.

"Until today." the female voice said before releasing a powerful Ghostly Wail.

Future Valerie had to cover her ears. The Ghostly Wail is similar to Danny Phantom's, but much worse since it's high pitch. The Ghostly Wail caused the shield's towers to malfunction, disabling the shield and the explosions knocked Future Valerie out of it, but recovered with her board. The city's ghost raid sirens blared all over the city and the people runs in panic as they try to take shelter. Future Valerie looked at her monitor again to see the same red eyes.

"Familiar with the new power? That's right. Meet my Ghostly Wail." the female ghost on the screen said.

At that moment, a purple meteor knocks Future Valerie off her hoverboard and she crashed to the street below. She was cut and bruised, but nevertheless, okay. Future Valerie look to see her attacker.

"You?!" Future Valerie said in shock as the attacker was no other than the Fright Knight.

"Yes, me. And I serve a new master now." Fright Knight said before attacking Future Valerie, which she managed to evade by calling her hoverboard and retreats, heading towards Fenton Works.

"I gotta get to dad." Future Valerie said as she continues to evade the Fright Knight's attacks.

Future Valerie eventually reached Fenton Works and flew down to the lab where Damon was.

"Dad, the Fright Knight's here, which mean SHE can't be far behind. What do we do? What do we do?" Future Valerie asked.

At that moment, another high pitch Ghostly Wail shook the building before the floor cracked. The floor exploded and a ghost emerged from the hole. It was a beautiful ghost woman. She was wearing a two piece black and white jumpsuit that looked similar to Dan's, but the top is inverted, midriff exposed, had a black DP logo on her chest, wearing long white heels that goes up to mid-thigh on her black pants, and a cape, black on the outside and white on the inside. She also had long flaming white hair that flows freely down, teal skin, blood red eyes, pointed ears, red lipstick, a figure and fangs. The ghost woman lands on the ground and looks at Valerie and Damon.

"Hello, Valerie." the ghost woman greeted before raising her hand. "And goodbye."

She then proceed to blast Valerie and Damon before destroying the Fenton Works building before the monitor pauses.

Dan couldn't believe what he just saw on the monitor. This ghost woman, that looks like a female version of himself, was clearly destroying Amity Park and the world in that timeline, just like him in his timeline, for she is sadistic, cruel, murderous, and heartless. She is also arrogant and cocky. And interestingly, this ghost woman looks like a future version of the little girl that looks like Danny. Dan then had an evil grinned.

"I think I now know what to do." Dan said before grabbing the destroyed thermos and the book and flying out of the tower. "Soon, I will have my revenge, and together with the ghost woman, which I assuming to be my relative, we will rule this world together and destroy Danny and his family and friends." Dan laughed maniacally before heading to find a place to hide and starts planning his revenge for the next 6 years.

And that's the end of the prologue. Get ready cause this will be one epic story. Also, another announcement is that I will being doing a collaboration story with fellow fanfic author and friend mikaela2015, who is best known for her Danny Phantom versions of the Disney movies and the Phantom Twins series. the collab will involved the DPxMCU universe and the Phantom Twin series. If I can get 10 reviews, I will upload chapter 1, which is ready to be uploaded. Please review. :)