There's something fishy going on in this place. I may not live in Gravity Falls, Oregon, but even from my home in Georgia I can tell.
Background info: Bill Cipher is a time demon found in the Mindscape. He may have been stopped temporarily by the Pines family, but he will be back.

Theory:
Bill is real. And he's back.

Theory explained:
If you read beyond this, well… Just take this as a warning.

Once there was a 12 year old child named (imma just name myself for now dis aint real) Shadow. She was a complete nerd and loved watching the animated series Gravity Falls.
One day, she got bored and decided to go exploring in the woods. She encountered a clearing surrounded by birch trees. Growing more curious by the second, she looked around the area. There were some candles and a rusted photo frame. She ran away asap.
This was what started her curiosity. She began reading the series of journals, searching online for answers, and trying to uncover answers. Even a simple tree branch shaped like a triangle was enough to scare her.
More answers led to more theories. More theories led to more answers. More answers led to a new fact. Bill is real.
A while later, she started having weird dreams. Attacks. I don't even want to go full detail.
It would be nice to say that this story is fake, but it's not. I am Shadow (nickname), and this is all true.

Moar evidence:
In the end of the show, Bill Cipher is erased with the memory gun. Stan was able to recover though. …what if Bill survived? Stan remembered his family. Bill could've escaped. He could be trapped somewhere in the mindscape trying to get back at them.
Maybe after them, he'll target me. I've erased several attempts to summon him, and you know how much he hates setbacks. …run.

I'll try to answer every comment.

Nice creepypasta you've got here

I wish deku scrubs were real

WolfCat67 wrote:

Nice creepypasta you've got here

It's not a creepypasta it's real life.

I don't think this is true. However thought forms or tulpas are mythical beings that are created from, well, thoughts. Bill is fictional but theoretically a dedicated fan could create him if tulpas exist. I know tulpas sound impossible but the placebo effect and its opposite the nocebo effect are examples of the power of belief.

Again I don't think he is back but this is an interesting thought.

Dabzers wrote:

I don't think this is true. However thought forms or tulpas are mythical beings that are created from, well, thoughts. Bill is fictional but theoretically a dedicated fan could create him if tulpas exist. I know tulpas sound impossible but the placebo effect and its opposite the nocebo effect are examples of the power of belief.

Again I don't think he is back but this is an interesting thought.

This is quite logical. It explains my imaginary friends.

I think some of these things, like the dreams, are a part of your imagination. Bill is a made up character created by a Disney show. The rusted photo frame and the candles could've been something entirely different.

Dabzers wrote:

I don't think this is true. However thought forms or tulpas are mythical beings that are created from, well, thoughts. Bill is fictional but theoretically a dedicated fan could create him if tulpas exist. I know tulpas sound impossible but the placebo effect and its opposite the nocebo effect are examples of the power of belief.

Again I don't think he is back but this is an interesting thought.

What on Earth is a Tulpa, Placebo and a Nocebo?

owlannaelsa wrote:

Dabzers wrote:

I don't think this is true. However thought forms or tulpas are mythical beings that are created from, well, thoughts. Bill is fictional but theoretically a dedicated fan could create him if tulpas exist. I know tulpas sound impossible but the placebo effect and its opposite the nocebo effect are examples of the power of belief.

Again I don't think he is back but this is an interesting thought.

What on Earth is a Tulpa, Placebo and a Nocebo?

Uhh… it's the Carbonaro effect

Viginti wrote:

I think some of these things, like the dreams, are a part of your imagination. Bill is a made up character created by a Disney show. The rusted photo frame and the candles could've been something entirely different.

That's what I was kinda leaning towards…

Viginti wrote:

owlannaelsa wrote:

Dabzers wrote:

I don't think this is true. However thought forms or tulpas are mythical beings that are created from, well, thoughts. Bill is fictional but theoretically a dedicated fan could create him if tulpas exist. I know tulpas sound impossible but the placebo effect and its opposite the nocebo effect are examples of the power of belief.

Again I don't think he is back but this is an interesting thought.

What on Earth is a Tulpa, Placebo and a Nocebo?

Uhh… it's the Carbonaro effect

I see what you did there.

owlannaelsa wrote:

Dabzers wrote:

I don't think this is true. However thought forms or tulpas are mythical beings that are created from, well, thoughts. Bill is fictional but theoretically a dedicated fan could create him if tulpas exist. I know tulpas sound impossible but the placebo effect and its opposite the nocebo effect are examples of the power of belief.

Again I don't think he is back but this is an interesting thought.

What on Earth is a Tulpa, Placebo and a Nocebo?

Not to be mean but I literally said what a tulpa is in that post. A placebo is when a positive expectation leads to a medicine having a positive effect while a nocebo leads to a negative effect from a negative expectation.

Viginti wrote:

I think some of these things, like the dreams, are a part of your imagination. Bill is a made up character created by a Disney show. The rusted photo frame and the candles could've been something entirely different.

Good point.

This would be so scary

if it was real