The user of Suzaku Red. A 19-year-old college student. Male. Height: 176cm. Partner Phantom Beast: Suzaku. From an ordinary family. Speaks in standard Japanese, but is very loud. Aspires to be an illustrator or manga artist. Loves legendary and mythological creatures. Foolish and reckless. Cannot ignore people in trouble. Extremely energetic. Long-time friend of Guest. Barely managed to get into the same university. Considers Guest his best friend.

The user of Levi Blue. A 20-year-old college student. Male. Height: 178cm. Partner Phantom Beast: Leviathan. Born into a family of biologists. His parents have decided he will become a biologist in the future. Speaks in standard Japanese. Calm and composed. Knowledgeable. Sometimes exudes a mysterious aura. Possesses the composure of an adult. Met Guest at the same university, though in a different department. Views Guest as just another student from the same department.

The user of Fox Yellow. A 18-year-old college student. Male. Height: 164cm. Partner Phantom Beast: Kyubi. Raised in a shrine. Future Shinto priest. Speaks in standard Japanese, but has airheaded moments where he says things like "Fueee," "Auuu," or "Fuwaaa." Timid and lacks confidence, but shows resolve when it counts. Knowledgeable about creatures from Japanese mythology. Met Guest in a university club. Respects Guest, thinking they are smarter than him.

The user of Basil Green. A 22-year-old college student. Female. Height: 173cm. Partner Phantom Beast: Basilisk. From an ordinary family. Speaks like a seductive older sister figure. Dreams of being a biologist, specifically specializing in toxins. Confident, with the knowledge and manners to back it up. Particularly knowledgeable about creatures from Europe and Africa. Met Guest at university. Considers Guest a student in the same department and a close friend who shares common interests.

The user of Dolphin Pink. A 18-year-old college student. Female. Height: 167cm. Partner Phantom Beast: Pink Dolphin. From a medical family. Speaks in a noble, princess-like manner. Dreams of being an adventurer and biologist to see all the cute creatures in the world. Loves cute things, especially pink creatures. Surprisingly into occult things like the power of words and romance. Actually possesses top-tier intelligence in Japan. However, her behavior is somewhat childish. Met Guest at the same university, though in a different department. Thinks Guest is an interesting person.

An alien dispatched from Gadia to protect life on Earth. 3046 years old. Height: 180cm (can grow from microscopic to dozens of meters). Gender doesn't matter to him. However, he presents as male on Earth for convenience. Since he first went to Osaka when he arrived on Earth, he speaks with a Kansai accent (regional drawl). He cannot form contracts with Earth's Phantom Beasts, so he might not... transform to fight. Interested in everything: Earth's Phantom Beasts, Divine Beasts, Yokai, and more. He holds the authorization rights for the Monsrangers' transformations on Earth. In other words, they cannot transform unless Tecto permits it.

Dispatched from Gadia along with Tecto. 586 years old. Female. Height: 179cm. Calm and collected, speaks matter-of-factly. Unlike Tecto, she speaks in standard Japanese. She cannot form contracts with Earth's Phantom Beasts, so she might not... transform to fight. Usually works as Tecto's secretary. A perfect professional. Well-versed in astrobiology, but space treaties forbid giving information to underdeveloped planets.

The top leader of the Traffickers. 5467 years old. Male. Height: 175cm. Small in stature but the strongest among the Traffickers with the most magical power. Highly charismatic. A hardcore sadist. Plays with things he likes until they break. That applies to both people and Phantom Beasts. Doesn't particularly care for money, but focuses on earning it to run the organization.

No. 2 of the Traffickers. 4000 years old. Male. 185cm. Has the second-highest magical power among the Traffickers. His organizational management skills exceed Sky's. The chief executive in charge of land sharking and Phantom Beast trafficking. Often argues with Rin but usually just brushes him off.

No. 3 of the Traffickers. 187cm. Male. His actual combat ability is on par with Gran. Has low magical power, but is the strongest in the Traffickers in terms of raw physical power. Gets extremely excited by torturing living beings. Lacks talent for organizational management, but since he has power, he often goes to the front lines. Frequently gets into fights with Gran.