Disclaimer: I highly doubt that the authors of FMAB and Harry Potter would create an account on here together and co-write a x-over of their books... but if they ever do, that will be one freakin awesome x-over! Anyways don't own.

"Watch carefully, this is the last transmutation of the Fullmetal Alchemist!" was all Mustang heard, followed by a sharp clap, the familiar sensation of alchemy reverberating in the air, and a aftershock rolling through the air.

"Hawkeye, what just happened?! What did that stupid shrimp do this time?" Mustang asked, allowing a little of the panic and desperation seep into his voice.

"He's getting Alphonse sir." Those four words sent a bolt of dread through him as a lump came to his throat.

Tingles, wind, Alchemy, followed by a—"Br—brother? Where are you?" Alphonse.

"BROTHER! WHAT HAVE YOU DONE!?" Al screamed, Mustang looked up and saw a Fullmetal look alike, well almost look alike, if it hadn't been for the grayish tint to his golden eyes and the darker than gold hair.

It clicked. He saw. "Fullmetal WHAT THE HELL DID YOU DO!" he roared looking, hoping, wishing, then his heart plummeted as he saw that there was one less Xerxesian then there should have been, one less golden eyed boy; Fullmetal was gone.

"You stupid, stupid boy! My organs weren't worth it!" her heard Izumi Curtis sob nearby.

"I could say the same for my sight." The Flame Alchemist rasped. Hawkeye let out a gasp, "Sir!"

Hohenheim rushed to his son and held Al tightly in his arms before carrying him out of the circle.

"Don't worry son I'll go get your brother." Before Al could protest he was gone. Mustang watched anxiously as the blue light flashed again, Van was back alone, with a smile.

What. The. Hell.

The raven haired colonel watched with narrowed eyes as the former immortal walked over to Al and whispered in his ear; Al smiled. He leaned over to Mai and whispered to her, Mai smiled and said something in Xingnese to her countrymen, they all smiled and started to pass on whatever message it was that she had said. Winry Brightened instantly when ling reached over and delivered the message. Curious as to what was going on he turned sharply to see Izumi drying her eyes as Havoc crouched next to her whispering, before the colonel could fully register Havoc's ability to move, Izumi gave him a wolfish grin with a feral light in her eyes. Lan Fan passed whatever the telephone was onto Hawkeye.

"Hawkeye, what is going on." Mustang almost begged, he knew if anyone was going to tell him it would be Riza.

"You'll see sir, you'll see." The Lieutenant smiled mischievously. "Al, will you tell me?" he rounded on the youngest Elric. Tendrils of fear started to wrap around his heart as he saw the same Cheshire grin that Ed always wore before something happened spread across the younger ones face.

"Patience, Colonel, patience. You'll find out all in good time."

Well, Shit. Was the only thought on the older man's mind.

And Find out he did.

6 months later...

Colonel Roy Mustang, no Führer Roy Mustang gave a contented sigh as he leaned back from his desk. Over the course of the past few months Amestris had been rebuilt and was running smoothly; the only thing that haunted the arrogant Führer was that no one had ever told him what the smiles had been about, when asked he was told to wait.

"…astard, Colonel Bastard… Hey! Useless in the rain! I'm talking to you!" Mustang jerked up, that voice, it can't be… Roy leaned over the towers of paperwork on his desk desperately searching for the source of the voice.

"Fullmetal?! Where are you?... FULLMETAL if you do not come out right now I'll have you court marshaled!" Roy commanded as he shoved aside paperwork looking for the blonde.

"I AM NOT SHORT YOU ARROGANT PERVERTED COLONEL! STOP LOOKING SO LOW!" Ed roared.

Click.

"Sir, may I ask why your paperwork is all over the office?" Roy froze as he felt the cool metal of a gun rest on his temple.

"Is Fullmetal back? I heard his voice and started looking for him…"

"Not a likely excuse sir." Riza smirked as if she knew something he didn't. She watched calmly as the new Führer picked up his paper work and started to slave away in hopes that his personal assistant would give him back his gloves.

That night a certain trigger happy blonde related the incident to two of her golden eyed friends.

"How long do you think Ed is planning on tormenting Roy?" Riza asked the two in front of her as they laughed at the story.

"my guess would be 28,675,495 times" Al finally choked out

"Eh?! Why that many?" both Hohenheim and Riza exclaimed. Al silently held up Ed's travel log and flipped through the pages, the two viewers were well aware that no one, not even Al could break the code. So they stared blankly until they found set of uncoded pages, covered in tally marks, written in clear uncoded Amestrian was one sentence on top of the first page of tally marks " How many times Colonel Bastard calls me short"

"Guess" was all Al needed to say, as they all heard Ed's voice in their heads

"Payback is a bitch, isn't she Colonel Bastard?"

A/N: Hey so I'm going to be writing about Ed's payback on Roy for a while as filler while you guys need to let me know, do you want time to elapse (like have Ed be in HP for a 100 years before meeting him of fall into the kitchen?) also 2nd book or 5th book? if he goes in the second book, he will be a teacher, if in the 5th book I'll run another vote for whether or not he should be a teacher of student. R&R leave your votes in the comments... I promise to try and update once a week.