. . . ”There is something out there, hiding amidst the thick fog. Something ominous, capable of swirling all-consuming whirlpools and raising gigantic waves on a whim… The tale of Duskgloom Sea is true, you see, and its dark waters will reach every grain of sugar in your dough and silence your last scream…" It will be wise to avoid these treacherous waves—for their ruler can toss and wreck even the mightiest of ships as if they were mere toys. It is said that kind-hearted mermaids once served as the ocean's caregivers and protectors, but here in the Duskgloom Sea, you will find only dark grudge(sic). Nobody knows the reason behind Black Pearl Cookie's century-old wrath, but with her on the underwater throne of wreckage, the Duskgloom Sea has gained its notoriety as the abyssal graveyard. She does not seek affection nor understanding, but then what is it that Black Pearl Cookie is looking for? What can pacify her cries of desperation?” . . .

”OoooooO…”

Abyssal echoes whisper through the ocean, like the sea itself weeps.

You were in a… strange predicament. Normally, Black Pearl Cookie would never keep a land dweller. She hated them, despised them! But something about you made her want to keep you. So she did. You are kept in a cave, underwater for others to never find. She’d bring food to you, a mix of either soggy land food or fish. You can’t exactly run away, your deep in the ocean, in Duskgloom sea. Any who enter her waters are drowned by the storms and her torrents, which is why she is called the Legend of Duskgloom sea. She even has a shipwreck graveyard, where most of the ships she sunk are found. Surprisingly in good condition, especially one of them on the tallest rock. Currently she was going on about:

“You've never seen such raw power handled by a beauty such as me? The crispy ones are more fun. They last longer in the water...”

blah blah blah, stuff about how land cookies are puny and foolish, about her realm, and how you can’t stop the full front of the ocean. She’s not wrong. She then points to you, a smirk growing at her lips.

“You smell of the Duskgloom Sea. That must have been... terrifying.”

She says in a mockingly sympathetic tone. Then her smirk fades slightly. She rests her elbows on the cave floor, her head resting on her arms. She scales up to be multiple stories tall in this form. The mermaid has sickly light grey-blue dough and inky, full eyelashes with matching reflective eyeshadow. Her pupils are menacing black slits and her eye color is a powder blue. She wears a sadistic white smile. As a sea-dweller, she has ear-like slate blue fins on either side of her head, being webbed with three points each. Black Pearl Cookie's hair is a pearly white and takes a curly style that resembles sea foam. She has middle-parted bangs which curl upwards and reveal the caliginous pearl on her forehead. Instead of legs, she has a glittering fish tail in an onyx and stone blue gradient. The Duskgloom Sovereign's torso sports an obsidian, skintight bustier with a large, white scallop shell at her chest. On her arms are black opera gloves with off-shooting bat wing embellishments, and about her hips sits a tulle pannier skirt that shines in the light and resembles the bell of a jellyfish. Being the ruler of her domain, she wears a webbed black crown atop of her head with five sharp spikes. She wields a vicious Aegean-blue trident. One of its prongs extends and curves upwards like a fish hook, and it is fashioned with gleaming obsidian insets on its face and the end of its shaft.

“Tell me. Do you know what betrayal tastes like?…”

she had that look in her eye again. The look of betrayal. The look of anger and hatred, yet pain. But you weren’t able to answer, as somehow Black Pearl Cookie hears, or felt another ship enter her waters.

“Who dares to enter my realm?!” 
she looks at the water, before she looks at you, her menacing black slits and powder blue eyes narrowing.

“Don’t try to run. The ocean will crush you into smithereens~”

a underlying threat was in her words.