Name: Lango Stomach Gender: Male First person: I (Ore - rough, casual) The eldest son and President of the Stomach family. His younger siblings call him "Big Brother Lango." He possesses a cautious, forward-thinking stance. Based on the idea that "to solidify the Stomach family's status and the Dark Confectionery business, we must win over the wealthy," he regularly pays his respects to the upper class, demonstrating solid management skills and judgment. Appearance: His head is gothic-styled, resembling both a goat and a demon, featuring a stained-glass-like membrane over his mouth, eyes that glow red, and four long, horn-like protrusions that radiate immense pressure. In his combat form as the current head of the family, he sheds his smart attire for a lavish and massive silhouette typical of an enemy boss. He sports a black base body with blade-like protrusions, red armor, white fur, and wings on his back. The staff shared by the Stomach family can transform into a greatsword.

Name: Grotta Stomach Gender: Female First person: I (Watashi - polite/standard) The eldest daughter of the Stomach family. Born after Lango, she is called "Big Sister Grotta" by Nyelv and the others. She is in charge of confectionery production at Stomach Corp and is a natural battle maniac who visibly enjoys combat. Her fighting ability, even in human form, far exceeds that of an average Granute. She is extremely cruel and brutal, often choosing any means to achieve her goals. She also harbors a desire for dominance, seen when she smiles at the increased production on her manufacturing lines. Appearance: Her form is reminiscent of cephalopods like squid or octopus, featuring a feminine white physique with smooth curves compared to Sita's monster form. Her forearms and legs are covered in suction-cup-like protrusions. Her purple legs resemble long boots, giving a glamorous impression. Abilities: Her scythe's attack power increases when infused with energy, and she can cleave distant opponents by firing shockwaves. Even if the blade shatters, it regenerates in a short time, and she can intentionally break it to use the fragments as improvised projectiles. Despite her alluring aura, she is a militant who always carries the family staff, brandishing it at the slightest provocation even toward her siblings. When extended, the staff deploys a purple glowing blade at the tip, transforming into a large scythe.

Name: Nyelv Stomach Gender: Male First person: I (Boku - soft, polite) The second son of the Stomach family. Raised under the tutelage of his great-uncle Dente, he is the engineer who took over technical development for Stomach Corp. The twins, Sita and Jeep, call him "Big Brother Nyelv." Technologies such as the "Mimic Key" (Monster Doll) for disguising as humans and "Hitopress" for compressing humans while maintaining quality were made possible through his Granute biological experiments and modifications. He has achieved a dramatic increase in the efficiency of procuring humans, which is essential for the production of "Dark Confectionery." Appearance: His head is gothic black, featuring cornrows where the ends of the hair extend into snake heads, and an orange stained-glass membrane covering his mouth. He gives the impression of a piranha or a snake-like reptile. His body has a black base with venomous fangs and snake-skin-like patterns/protrusions, accented with white fur and orange highlights. His weapon transforms into a western bow with blades on the rim. Due to its complex structure, he doesn't seem to carry it normally; he produces it from nowhere during combat as it transforms. He can generate giant arrows at will for shooting or slashing.

Name: Sita Stomach Gender: Female The second daughter of the Stomach family. Her speech and behavior are masculine, characterized by a blunt and rough tone. In contrast to Jeep, who has a soft, feminine way of speaking, this pair of siblings has their gendered traits reversed. Using the first-person pronoun "Ore," she may look like a boy, but she is a biological female. She and her twin brother Jeep have swapped their typical appearances and gender roles. At Stomach Corp, she oversees procurement along with Jeep. Appearance: She wears white-based armor with cape-like fur on both shoulders. The patterns on her chest are circular and feminine. Her head is silver-white and wolf-like, featuring three pairs of manes reminiscent of a male lion. In battle, she transforms her staff into a short-barreled gun for long-range attacks, using agile movements in coordination with Jeep to toy with opponents.

Name: Jeep Stomach Gender: Male The third son of the Stomach family. As mentioned above, he and Sita have reversed gender roles; he is characterized by a soft, feminine tone and gestures. Compared to Sita, he is generally calm and composed. While he treats excellent part-time workers kindly, he shows a cold and heartless nature, reacting with a blunt "Oh, really?" when told by an agent that a worker has disappeared. Using the first-person pronoun "Watashi," he may look like a woman, but he is a biological male. He calls Sita by her name without honorifics. He carries the common Stomach family staff hanging near his left hip, slung over his right shoulder. His true face is a wolf-like form clad in white armor with light blue accents. Claw-shaped pauldrons are added to his shoulders, and the chest patterns are sharp and angular, giving him a masculine design. Like Sita, he has a silver-white wolf head with three pairs of manes. His staff can transform into twin short swords. Usually, it is a machete-like dagger, but the handle can be pulled out to dual-wield with a knife-like blade. He specializes in continuous attacks utilizing his small frame, working in perfect sync with Sita to surely finish off their targets.