This is one of the many ideas I've had, and I am writing a short intro chapter for each of them. I also have uploaded a seperate story listing ideas I have, although not all of them have been worked on.

Year (Amestris): 1572

It had been a relatively short time (In geological time) that Truth had been in existence, having been made with the purpose to stop people from accomplishing human transmutation. As the biological parts of Alchemy had only just been discovered in Xerxes, Truth mostly floated around watching the humans, or creating things to amuse him. It was interesting when one of the other Gods dropped by, usually just Tet, Being X, or Oum, but lately they were all busy.

'Why are they always so busy?!' Truth whined to himself, kicking his legs as he floated around the white expanse, the only thing he could see was the Gate. 'I'm boooored!'

(The Fates, Norns, and other Prophetic beings across the multiverse cackled as another foolish being said the forbidden words)

He sighed. Then from behind the two doors, a crash sounded. "Wha-" he was cut off by a louder crash. Investigating the sound, he found a large rock having been dropped in his realm. "What the blazes?" Truth muttered, then jumped back as more stuff crashed down, among that around 80% of it was trash or useless items. Truth snorted. Was this a prank of some kind? Didn't they know anything not made in his realm would decay and fall apart over time, which was why it was detrimental for humans to visit for extended periods? He sat back and waited for the rubble to disintegrate. And waited. And waited. He then realized that for some reason the materials weren't vanishing.

Realizing whatever was causing the objects to appear would not stop any time soon, he quickly moved to bend reality. A hole appeared in the floor, and when one looked down it, it appeared bottomless.

Truth sat there, adrenaline rushing as excitement filled him. Finally, something interesting! He picked up a pebble, and inspected it. He could feel an energy source on it, like oil, that caused the properties of his realm to completely ignore it.

He spent the next few hours (or weeks, it was hard to tell in the void) giddily observing the phenomenon. It appeared that it was basically a trash dumpster of some kind from somewhere, because it had to come from somewhere, right? Equivalent exchange and all that. After a long time of taking meticulous notes of what had come out of the spot, he realized that the items did not follow Equivalent Exchange. Most of it was normal rocks, yes, but a few items had rather ridiculous uses, and he stored them for later. Such as a small golden ball with feathered wings, a self filling teapot, and a few small creatures that could only be described as gnomes. The latter he had stored in a cage with food and water, and played with them every now and then when he was bored. It was overall rather relaxing. He had even had a small shelf floating in the middle of nowhere like a display case to store the items.

Truth had an idea. If the items came from another world, then he should investigate that world! Maybe it would be a nice vacation home, or he could rule over it! Truth spent a few more (years? minutes?) to make sure he understood where the objects were coming from, and made a new gate to go the the other world. The Gate was smaller, about the height of a human, and was hidden behind The Gate. (Note: the smaller, new gate will be referred to as the Gate, and the big one is The Gate, with a capital 'T'. Well, this is going to get complicated real fast.)

Truth readied himself before going through the new Gate. He changed his appearance to that of an average human. His hair was white, with an androgynous shaped body. It had white hair, white eyes, and a grin that was on the line between happy and insane. Freckles dotted his face under his eyes. He wore a business suit, also white. Brushing himself off, he moved. Stepping to the door, he pushed it open, and took in a deep breath.

'Showtime!'

NN: I thought the idea of Truth screwing around every few centuries in the Wizarding world would be funny. His outfit is a bit like Kimblee's, just no fedora. Perhaps Truth helps make the Room of Requirement? Review with any ideas you may have. Also, if you understand the multiverse theory, I think that the worlds of fanfictions are differents dimensions, like Rick and Morty, but also in different Universes as well. It's pretty convoluted, but that's how some stories intertwine and the histories can change so easily. Check out my other stories and ideas on my account!