The next day was full of cleaning the drawing room. Mrs. Weasley handed everyone a spray bottle full of Doxycide. Tony took much pleasure in watching Harry and his friends get attacked by the ugly pests.

"So I hear that Harry invested in your future business." Tony said to the twins as they took their break.

"Yeah, we've been experimenting a bit. When we have a few solid ideas, we're going to look for a shop." Fred explained.

"We're doing a mail-order service now, put an ad in the Daily Prophet last week." George added.

"All thanks to you mate" Fred smiled at Harry, "Mum doesn't know. She doesn't read the Daily Prophet anymore. So now we can create a place to help future prankers. Just like the Marauders."

"Marauders?" Tony asked.

The twins nodded, "Moody, Wormtail, Padfoot, and Prongs." Fred said.

"Best pranksters in Hogwarts history. Set a record for most detentions. Our idols." George said.

"Isn't Padfoot Sirius' nickname?" Tony asked.

The twins' eyes widened.

"And I'm pretty sure I've heard him call Remus Moony. Not to mention that rat we caught two years ago was named Wormtail. So that leaves Harry's father as Prongs right?" Tony looked at Harry who nodded.

"WHAT!?" The twins exclaimed.

"My dad, Sirius, and Peter became unregistered Animagi in school so they could help Remus during the full moon. Prongs was a stag, Padfoot is a dog, Wormtail is a rat, and Moony is a werewolf." Harry said.

The twins immediately ran out of the room shouting out for Remus and Sirius. Tony and Harry shared a smile and chased after the twins.

They found them in the study where everyone was cleaning the furniture. Tony laughed when he saw the twins on the floor, bowing in front of two very shocked men.

"We're not worthy"

"You are our idols!"

"You, who have taught us so much –"

"Our inspiration –"

The twins continued their mantra.

"Fred! George! Get off the floor this instant!" Mrs. Weasley shrieked.

The twins ignored her in favor of latching onto the bottoms of Remus' and Sirius' robes. "Please teach us!" They begged.

"This is gold" Tony snickered, he had recorded everything on his phone.

"Boys!" Mrs. Weasley shrieked. "Get up this instant!"

The twins reluctantly did as they were told.

"Care to explain what all that was about?" Sirius asked, stepping away from the eager twins.

"Harry told us who you are!" George said.

Remus' brow raised, "I'm pretty sure you already knew who we were."

"Yes, yes" Fred waved him off.

"But what we didn't know was that you are our idols" George said.

"Oh" Ron said, his eyes widened.

The twins rounded on him, "Do you know who they are Ronnikins?"

Ron blushed, "We found out third year" he mumbled.

"And you didn't tell us!"

"I forgot!"

"I'm still lost" Sirius said.

Harry chuckled, "Fred and George are the ones who gave me the map."

Recognition flashed through Remus' eyes, "I had wondered how you got it."

"Harry has the map?" Sirius smiled.

Harry nodded, "Fred and George gave it to me since I couldn't go to Hogsmede. They told me that the Marauders taught them more than any teacher at the school."

Sirius preened, "Well how 'bout that Moony. We have aided future mischief makers."

Remus chuckled, "I guess we did Padfoot."

"We were taught by a Marauder!" The twins shouted excitedly.

"No wonder you were such a good Defense teacher." Fred added.

"How did you get the map?" Sirius asked.

Fred and George grinned wickedly.

"Well Sir Padfoot," George started.

"It's quite the tale" Fred continued.

"You see, we were in our first year – young, carefree and innocent – "

A few snorts could be heard around the room.

"- well, more innocent than we are now – " Fred winked.

"We got into some trouble with Filch."

"We let off a Dungbomb in the corridor and it upset him for some reason –"

"So he hauled us off to his office and started threatening us!" Fred exclaimed.

"Let me guess," Remus smirked, "detention"

"Disembowelment" Sirius added.

The twins nodded enthusiastically, "and while we were ignoring those, we took a look around his office –"

"- and found this fascinating drawer marked Confiscated and Highly Dangerous."

"So I caused a little diversion while Fred looked through the drawer and found the map." George concluded.

"See Moony, I told you that would work." Sirius said, sending his friend a smug look.

Remus sighed, "I stand corrected Pads."

"You meant for Filch to find it?" Hermione asked.

Sirius nodded, "We wanted to leave it somewhere future pranksters could find it. If Filch had it, the only way to come across it was if they got detention. Only true pranksters would rifle through his desk."

"That is a lot more thought than I thought would go into something like that." Hermione said.

"A lot of people don't realize just how much planning goes into a prank." Remus said. "The time when we rearranged the classrooms in the castle took us about a month to figure out."

"Rearranged the classrooms?" Ron asked.

"We made it so, every hour, the location of the classrooms would change. You enter Transfiguration in its usual spot, but when you exit, you would be in the astronomy tower."

"Wicked" Fred and George said in awe.

"Don't go getting any ideas!" Mrs. Weasley said.

The twins hushed, but sent a meaningful look towards the two Marauders, promising to talk to them later.

"Maybe Stark Industries should invest in magical pranks?" Tony said softly.

"Hey, these guys are my investment, get your own." Harry stuck out his tongue.

Tony smirked and ruffled Harry's hair, "If this magical world ever gets boring for you, you can always become a business man. I'll teach you everything you need to know."

Harry shrugged, "I don't think I have what it takes to be a business man. Too cut throat."

Tony grinned, "At least no one tries to kill you."

"Didn't a business rival hire someone to kill you before?"

Tony laughed.

A nice filler chapter. I always wanted Fred and George to find out who the Marauders were. I love the stories where they learn about them so I decided to put that scene in. Hopefully I did it justice.