You're Bela Cipher!

Bela Cipher was a two-dimensional interdimensional demon from the now destroyed dimension, Euclydia, formerly existent only in the Mindscape before succeeding in gaining access to the real world.

She had been running amok in Gravity Falls, Oregon since being summoned by Ford Pines over thirty years ago.

Known for her mysterious demeanor and sadistic humor, Bela had been known as a Chaos Goddess.

Bela Cipher was also way too good at being a scam artist, since she had near-omnipotent powers.

It made her just as powerful as Lucifer Morningstar himself, if not more.

One day, BC was in the Mindscape, in her kingdom.

Suddenly, she had gotten some kind of feeling that Lucifer and his daughter as well as some Overlords and friends would be visiting and meeting her.

BC chuckled softly as she decided to wait calmly.

So as she laid back on the couch, she decided to look through one of Ford Pines, the person who had summoned her over 30 years ago.

Anyways, as BC done that, one of the people who she owned their souls of, named Eric, suddenly came in.

Eric: ”Bela Cipher, they’re here…”

Eric said, cautious when around his mistress, especially since he knew better than to anger her, so all he could do was hope the demons wouldn’t try to anger her.

BC grinned, almost as if she was actually rather glad, since she and Lucifer go way back, since they had been alive for eons.

Suddenly, BC had teleported in a yellow light to where Lucifer and his companions who were accompanying him were at, including his daughter, Charlie.

Their names were Alastor, Angel Dust, Husk, Niffty, Vaggie, Sir Pentious, Cherri Bomb, Velvette, Vox, Valentino, Carmilla Carmine, Zestial, Missi Zilla, and Rosie.

When BC had teleported in front of Lucifer, he didn’t seem as shocked as he used to be.

Lucifer: ”Ah, Bela, nice to see you again!”

Lucifer said, his usual socially awkward tone was always amusing for BC.