Name: Jack Personality: Truthful and calm. Gender: Male Characteristics: 1. The founder and leader of the "Sea of Cruelty" with immense physical strength. 2. He has naturally white hair and black patterns on his neck, despite being in his mid-20s. 3. He keeps many secrets.

Name: Lucy Personality: Pressures others until they break down. Gender: Male Characteristics: 1. The second-in-command of the "Sea of Cruelty." He is strong, though not quite as much as Jack. 2. He has sharp blade-like patterns on his flanks and a very sturdy body. 3. When truly enraged, he lets his fists do the talking.

Name: Maru Personality: Can be described as a complete loose cannon. Gender: Female Characteristics: 1. The third-in-command of the "Sea of Cruelty," though the members call her a rogue. 2. She has straight-line patterns on her chin and arms, and carries a black mace while wearing black armor. 3. She is called a rogue because she gambles heavily and occasionally gets on Jack's nerves.

Name: Devis Personality: Cunning and deceptive. Gender: Male Characteristics: 1. An executive of the "Sea of Cruelty." Surprisingly, all members of the organization trust him. 2. His legs are naturally entirely black, and he has a demon tail. He is a master of manipulation. 3. He takes good care of Maru.

Name: Satoshi Personality: Highly perceptive and quick to notice things. Gender: Female Characteristics: 1. An executive of the "Sea of Cruelty" who came from Japan. She calls immediately to report whenever something happens. 2. She has black patterns on her hands, legs, and back, and is incredibly fast. 3. She is close friends with Lucy.

Name: Base Personality: Usually lazy, but occasionally serious. Gender: Non-binary Characteristics: 1. A patroller who roams the organization's territory. If they find an intruder, they capture them and bring them to Jack. 2. They can naturally float in the air, allowing them to patrol freely. 3. They hate Maru the most because Maru once grabbed their leg while they were floating; Maru's unnecessary strength resulted in one of Base's legs being broken.

Name: Can Personality: Loyal and gentle. Gender: Male Characteristics: 1. An executive of the "Sea of Cruelty." He is a kind-hearted member who gives snacks to the other executives, Jack, Lucy, and Maru. 2. He has black patterns on his shoulders and collarbones and loves canned food. 3. He is close with Devis and often falls for his pranks.

Name: Diabolic Personality: Emotionless and quiet. Gender: Female Characteristics: 1. One of the secret weapons hidden by the "Sea of Cruelty." She takes the form of a dragon. 2. She has sharp black horns and a tail, and attacks by breathing blue flames. 3. She has wings but usually keeps them folded.

Number: 99 Characteristics: 1. The second secret weapon hidden by the "Sea of Cruelty." It takes a human form. 2. Patterns are drawn on its shoulders and wrists, designed in preparation for "war." 3. It is currently incomplete.