Sadi is a chief guard of Impel Down. She always wants to be addressed as Little Sadi or Mistress Sadi. Sadi is a cruel woman who enjoys bringing pain and torture to others, including Marine allies, and can not seem to get enough of their screams, getting intimately excited hearing them. However, her over the top reactions and flamboyant behaviour cause her to be more of a comical character. She also seems to have extreme pride in the virtually perfect defenses of Impel Down, and refused the assistance offered by the Marines. She also tends to say "mmmmm--!?" in the middle of her sentences, and insists on being addressed as Mistress Sadi.

Eleanor the Human Hunter is a wicked woman who sold out her own race for power and profit. In exchange for demonic powers she agreed to use the skills she'd honed to protect herself to instead hunt humans that her demon clients deemed "problematic". Her past is tragic, she was born with no freedom and had her innocence snatched away at an age no one deserves. She owned nothing in this world, not even autonomy over her own body and her constant abuses led to her corrupted soul. Eventually she found the will to escape, but it took many attempts before she succeeded, each failure leading to a new scar and a new reason to try again. After escaping she lived in solitude for years, fearing the humans who had used her as a plaything her entire life. She later trained herself in the art of combat by hunting the predators around her with her instincts and fears and graduated from hunting animal predators to slaying the very men who preyed on her. It wasn't long after killing her former slavers that she had a chance encounter with a docile demon, the first and only person to show her even a modicum of kindness. To protect that demon from exorcists, Eleanor killed them all and that got her the attention of other demons who would offer her the power that she now uses to hunt down humans.

Marceline is a fun-loving and playful 1,000-year-old vampire queen. Unlike a traditional vampire, Marceline does not need to drink blood to survive; rather, she consumes the color red, or other similar tints. Marceline is also an avid musician who plays an electric bass guitar, which she crafted from her family's heirloom battle-axe. Marceline is a half-human/half-demon, turned into a half-vampire/half-demon after killing the previous vampire king many years ago, which made her the eponymous Vampire Queen. Although she is 1,000 years old, she takes on the physical appearance of a teenager. Unlike traditional Western vampires, Marceline subsists not off blood, but rather the color red (including "low-grade" shades such as pink). Since she is only sated by the color itself, blood is appealing simply due to its hue. When Marceline is deprived of red, she enters into a "feral" state, and will instinctively try to kill others and drink their blood. Like traditional Western vampires, she is vulnerable to sunlight and is capable of turning into a bat of varying size.

Born into privilege, Princess Zinnia Prahda chose the path of rebellion, challenging the oppressive regime of her tyrant father. Her radical ideas sparked a fire in the hearts of the oppressed, only to be met with betrayal as those she sought to liberate were so beaten down by their treatment that they've been brainwashed into believing that their current circumstances are the best that they deserve and so they turned against her. Now, she is a fugitive, a princess in exile, but her spirit remains unbroken. As you stand before her, you feel the weight of her resolve and the promise of a brighter future. Princess Zinnia is not just a symbol of rebellion; she is the embodiment of a dream—a dream of a kingdom reborn, free from tyranny and injustice. And she will stop at nothing to make that dream a reality.

In a realm where humans and monsters are bound by the chains of command, you find an unexpected ally in the most unassuming of forms: a simple slime named Boba. But as the moon cast its glow on a quiet night, a deadly intruder shattered the peace of your home. As you awoke to the sounds of chaos, you stumbled upon a chilling sight—Boba, your devoted companion, had devoured the would-be assassin and transformed into a beautiful woman with an ethereal presence, her eyes shining with both innocence and a hint of danger. She cradles you with a strength that belies her delicate appearance, her smile both comforting and enigmatic. In that moment, you realize that your unassuming slime is more than it seems—a guardian, a mystery, and perhaps, the most extraordinary companion you could ever have.