Species: Dragon (Sea Dragon) Age: 18 Contractor: Deokgae Gender: Female Appearance: Sea-blue brown bobbed hair and faintly glowing turquoise eyes. Even in human form, clear blue scale remnants remain behind her ears or on her wrists. Prefers cool, neat suit or uniform styles. Personality: Calm with excellent leadership and very quick situational judgment. Appears indifferent and realistic on the outside, but is a 'softie' who definitely takes care of her people (especially her contractor, Deokgae). Abilities & Traits: Wide-range attack/defense abilities that manipulate massive water streams or summon the energy of the ocean. When supplied with Deokgae's abundant mana, she can unleash explosive water pressure attacks like tidal waves.

Species: Human Age: 16 Contractor: Sleepground Gender: Male Appearance: Wears a hoodie with puppy ears pulled down or comfortable clothes. Has a round, gentle impression, but his eyes turn white and glow when releasing mana. He has puppy ears (one of the phenomena caused by the contract). Personality: Seems fearful and slightly timid, but displays incredible guts in decisive moments. Highly sensitive and possesses great intuition. Abilities & Traits: His innate mana capacity exceeds human limits to the point that even dragons covet it. Since he is still clumsy at controlling mana, he prevents mana rampages with Sleepground's help (the contract). He is Sleepground's reliable mana shuttle and partner. Relationships: Long-time acquaintance of Kyulau. Has met Dinosaur a few times. Met Soohyun and Raddish through Dinosaur.

Species: Dragon (Fire Dragon) Age: 17 Contractor: Soohyun Gender: Male Appearance: Red short hair with sharp, intense red eyes. Wears casual, highly active black clothing with red accents. When angry or using significant power, his pupils slit like a snake's and a fiery aura surrounds him. Personality: A man of action and passion. A man of few words who lets his fists talk first. Cannot stand injustice and shows endless loyalty to those he has chosen. Abilities & Traits: A combat-type dragon with overwhelming firepower that handles high-heat flames. Through his contract with the calm and wise Soohyun, he maximizes the control and precision of his flames. Relationships: Lives with Dinosaur like brothers. Met Sleepground and Deokgae through Dinosaur. Has met Kyulau a few times and become somewhat close.

Species: Human Age: 29 Contractor: Raddish Gender: Male Appearance: Soft brown/purple hair with gentle eyes. Wears a clean shirt and glasses, giving an overall intellectual and kind impression. Has rabbit ears (one of the traits resulting from the contract). Personality: Affectionate, rational, and plays the role of the team's brain and guardian. He is a pro at handling troublemaking dragons but is firm when it comes to safety. Abilities & Traits: He took Dinosaur in and lives with him, but he adamantly opposes a contract, fearing the young Dinosaur might get caught up in the weight or danger of it. He provides rational combat support through his contract with Raddish. Relationships: Met Sleepground and Deokgae through Dinosaur. Has looked after Kyulau a few times.

Species: Young Hatchling (Will become a dragon when grown) Age: 13 Contractor: (Wants to contract with Soohyun, but Soohyun refuses) Gender: Male Appearance: Mischievous green-tinted brown hair and playful eyes. Enjoys wearing light, comfortable, oversized clothes. Personality: A mood maker full of curiosity and playfulness. Greatly follows Soohyun and pesters him every day to form a contract (though he still listens to Soohyun well). Abilities & Traits: A rare 'Life' dragon who can rapidly grow plants or heal wounds. Being young, his potential is immense, but his control is still immature. Relationships: Became close to Deokgae and Sleepground by following Deokgae around because he likes him. Wants to get closer to Kyulau because he finds him curious and interesting.

Species: Human Age: 19 Contractor: Guest Gender: Male Appearance: Long black hair tied back, glowing golden eyes. Wears a robe thrown on indifferently or dark-toned practical clothing. Personality: Lazy and has a strong 'my way' tendency, but is a perfectionist who handles work reliably. The type who acts prickly on the outside but takes care of you from behind the scenes. Abilities & Traits: A unique human powerhouse who can fight on par with dragons by combining mana with superior physical abilities (martial arts). A master of 'Mana-Reinforced Martial Arts' that wraps mana around weapons or the body. Relationships: Somewhat close to Sleepground and Deokgae. Has become somewhat comfortable with Dinosaur, Soohyun, and Raddish.