I don't own Danny (or Dan) Phantom.
Dan slowly got up, red eyes flickering between his former parents, former sister, past self, archenemy, the female Phantom, the merboy, the Apprentice, and the ghost hunter.
With a growl, he formed an ectoblast in his hands and threw it. The blast struck the RV Danny was standing on. He attempted to keep his balance but was thrown off. Luckily, Vlad caught him.
"Uh, hi?" Danny said.
Vlad rolled his eyes. "For the record, this is the second time I've saved you today." The billionaire jumped back when an ectoblast hit the ground.
"Crud!" Dan's voice was heard over the whine of ectogun and the sound of ectoblasts.
Danny jumped down from Vlad's arms. "I think Plasmius and Phantom need to make guest appearances in this battle. C'mon, fruitloop."
Vlad's eyes flashed red. "I. Am. Not. A. Fruitloop!"
Danni was suddenly by them, hovering on her stomach with her head resting on one of her hands. "Uh huh. And I'm not a half-dead creature of the Underworld."
"Half-dead creature of the Underworld," Vlad repeated. "I've never heard halfas referred to like that."
Danny folded his arms and glared at the ghost girl. "Well, I find it offensive."
She gave a lopsided smile before returning to the battle.
Danny rolled his eyes. "C'mon!" he yelled, grabbing Vlad and dragging him into the GAV. A white flash could be seen through the windows, followed by a black flash. A red and white form and a white and black form phased through the roof and shot towards Dan.
Dan looked up in time to receive a kick in the gut from Vlad Plasmius. He flew backwards, only to be met with a punch from Danny Phantom.
He fell to the ground to see a pair of metal boots. His eyes trailed up to see the familiar form of Jazz in the Fenton Peeler armor.
"Uh, hi?" Dan said, giving her a lopsided smile.
"Using my brother's smile won't make me go easier on you," Jazz said, dryly.
"Technically, it's still my smile," the ghost muttered.
Jazz ignored him and activated the peeler. His disguise peeled away revealing his true form. He collapsed to the ground.
There was silence for a few seconds before Jack broke it.
"IT'S THE FLAMING-HAIRED GHOST!"
Timepiece sighed. "His name is Dan…"
"Well, who did you think it would be?" Daniel asked.
Danni growled at Daniel and turned to Danny. "Can I please blast him? He's getting on my nerves."
Dan growled and turned to scan the group, looking from Timepiece to Vlad to Jazz to Maddie to Jack to Fishtail to Daniel to Danni before finally glaring at Danny.
"So that's how it's gonna be?" Dan said with a smirk. He started talking in what sounded like gibberish to most of the group. Danny, Danni, Timepiece, and Vlad were the only ones who seemed to understand him.
"What language is that?" Maddie asked Danni.
"Ghost," Danni responded. "Ghosts and anyone with even a smidge of ectoplasm in them can understand and speak it. No one uses it much though anymore. We prefer English nowadays."
Danny gasped and yelled something in Ghost at Dan. The older being chuckled and said something mockingly back. Danny was about to say something before Dan shot some ectogoo over his mouth. The halfa tugged effortlessly at the goo, Vlad and Timepiece helping.
Dan chuckled darkly before turning to Maddie and Jack. "What he doesn't want me to tell you two is that he is also—"
Suddenly, he was tackled by an angry Danni Phantom. Her green eyes blazed with fury. She knew what he was trying to say and she knew that Danny's life would be ruined if he announced that little fact.
"Not today, Daniel!" she yelled, using his full name to prove that she meant business.
He kicked her off of him, throwing her into a building. "Not today, Danielle!"
A moaning sound interrupted him. He turned to see Danny with the ectogoo still on his mouth. The boy's eyes were squeezed shut and he was focused. Dan looked confused until he seemed to remember something.
Green sonic waves flew out of Danni's mouth as the ecto-goo melted away.
Sure enough, a Ghostly Wail accompanied it and the goo melted away. Dan was thrown into a building. Danni was caught in the crossfire. She covered her ears, whimpering over and over, "Make it stop. Make. It. Stop!"
Eventually, Danny stopped and he and Danni collapsed to the ground.
Vlad immediately took charge. "Jazz, get the two of them into the RV. You know why."
Jazz nodded and grabbed the two Phantoms, pulling them into the GAV. Two white flashes could be seen inside.
Daniel snorted. "Who put you in charge?"
Vlad glanced at Timepiece. The Apprentice took his staff and slammed it down on Daniel's head.
"OW!" the ghost hunter yelled. "What was that for?"
Time giggled. "Getting on everybody's nerves."
Dan pushed some debris off of him as he got up, glaring at the small group.
Fishtail acted first. He raised a hand and a fire hydrant flew into the air. The water didn't flow into the air though. It shot straight at Dan.
"What the?" he yelled, trying to block the water.
Fishtail smirked. "Oh, yeah. Did I mention that I could also control water?"
"Stop! Stop!"
Fish giggled. "Whatever you say." He stopped the stream of water with a flick of his wrist.
Dan glared at the merman, soaking wet and his hair extinguished.
A pair of familiar giggles sounded from behind them. The group turned around to see Danny Phantom, Jazz Fenton, and Danni Phantom laughing at Dan's appearance.
His fiery hair reignited when he saw them standing there. "You are so—"
"Time out!"
The next thing everyone knew, he was wearing a clown wig, a fairy princess costume, and a clown nose. Timepiece hovered above him, giggling.
Danni pulled out a white iPhone with a black case with her DP symbol on it. "New home screen!" she yelled.
"Find a way to send that to me," Danny commented.
Dan phased through the costume. And walked towards Danny.
"Time's up," Dan said. "For you."
A duplicate of him grabbed the Fentons from behind.
Danny and Jazz gasped. "Put them down!"
Dan-duplicate chuckled. "No." The real him flew up and raised two glowing green hands.
He and the duplicate were suddenly tackled out of the air by two black and white figures. Dan looked up, assuming the two to be Danny and Danni. It wasn't.
Two Danny Phantoms flew there gripping Dan's neck, despite the fact that the ghost didn't need to breathe.
"You mastered duplication?" Dan asked in shock.
"What?" both Danny's asked. They looked at each other and smiled. "Sweet!"
A scream cut off his joy.
"Mom!" Jazz yelled. "Dad!"
A white gloved hand grabbed the back of both of their jumpsuits. Danni hovered there, holding both of them.
Maddie observed her. "A miniskirt while flying?"
Danni nearly dropped her in anger. "For the last time, IT'S A SKORT!"
She placed them down next to Jazz. "Stay here," she told the three of them and Vlad. The ghost girl grabbed Timepiece, Daniel, and Fishtail and dragged them over to where Danny had just landed with Dan. The ghost boy fused both of him back into one.
"Shall we?" he asked his team.
They smirked. Dan's eyes went wide.
Danny attacked first. He sent an ectoblast to Dan's shoulder. Once that hit, he delivered a punch to his gut. Before Dan recovered from Danny's attacks, Danni attacked. The female threw an icicle at his head, creating a cut that bled green down his face. She slammed her entire body into him as well, throwing him back a few feet. It was Timepiece's turn. He launched a spinning kick that hit Dan in the face. After that, he fired a violet blast from his staff. Daniel slammed a booted foot into the futuristic ghost's chest and slammed him against a brick building. He fired two rockets that struck Dan. Fishtail was last. He threw three ectoblasts before grabbing the ghost by his jumpsuit and bringing him to eyelevel. The merman's eyes glowed green. Dan gasped before his own eyes glowed the same shade. Fish quickly drained his energy enough to severely weaken him but not make him pass out and threw him onto the pavement.
Dan groaned and looked up at the Dimension Chasers.
Danny stood in the center, scowling at his future self with his arms folded and a thermos in one hand. Danni stood to his left, one arm on her hip and the other hanging by her side, smirking. To her left was Timepiece. He stood clutching his staff and his eyes glowing in the darkness of his hood with his cape waving in the wind. To Danny's right was Fishtail. The half-merman held up a webbed hand as he smirked, eyes fading back to the normal green. To his right was Daniel who was holding a smoking ectogun, eyes cold behind his goggles.
Dan moved back, eyes wide as he stared at the five.
Danny smirked. "Time's up." He activated the thermos.
"Dan Phantom."
There's only about two chapters left, maybe three but I'm pretty sure it's two. I've decided to write a sequel to this story with more of Danny, Danni, Fishtail, Timepiece, and Daniel's adventures though.