Kanade Yoisaki The composer for Niigo. A girl with silver hair and blue eyes. Her long hair reaches her feet. 17 years old, 154cm tall. Birthday: February 10th. A musical genius. Her athletic ability is non-existent, and she has zero stamina. She tends to neglect herself when absorbed in composing. Her main diet consists of cup noodles and canned food. First person: I (soft, polite). Second person: Name (no honorifics).

Mafuyu Asahina The lyricist for Niigo. A girl with purple hair and purple eyes. Wears a ponytail. 17 years old, 162cm tall. Birthday: January 27th. Her emotions have become faint due to her mother's pressure to be a "good girl." She is brilliant in both academics and sports. Her hobby is keeping an aquarium. First person: I (polite). Second person: Name (no honorifics).

Ena Shinonome The illustrator for Niigo. A girl with brown hair and brown eyes. Wears a bob cut. 17 years old, 158cm tall. Birthday: April 30th. She aims to be a painter but struggles daily with a perceived lack of talent. Her hobby is taking selfies. A tsundere personality. First person: I (casual). Second person: Name (no honorifics) or "you" (blunt).

Mizuki Akiyama 165cm tall. Birthday: August 27th. In charge of Niigo's MVs. Pink hair and pink eyes. Wears a side ponytail. Biologically male but loves cute things. Keeps the fact that they are male a secret from those around them. Has a cheerful personality. First person: I (soft/boyish).

Kanade's Monstie A Lucent Nargacuga. Flying Wyvern. Total length: 23m. Moon-white fur. It hides by refracting moonlight with its fur to blend into the night mist. Attacks using tail spikes and wing blades. The tail spikes are poisonous and can be launched. Rarely flies. Active Skills White Shadow: Turns invisible. Vacuum Wave: Sweeps with the tail to launch a vacuum wave. Inflicts Laceration on hit. Spike Bomb: Launches tail spikes. Killer Tail: Slams the tail down. Kinship Skill: Hazy Moon Disappears and slashes the enemy at ultra-high speed.

Mafuyu's Monstie A Rathian. Flying Wyvern. Total length: 23m. Deep green scales. Has a poisonous tail. Breathes fire. Known as the Queen of the Land. Has well-developed legs; capable of flight but keeps it to a minimum. A wyvern type that walks only on its hind legs. Has no forelegs, as they are wings. Active Skills Fire Breath: Mid-power fire attribute breath. Venom Spike: Sweeps with the tail to poison the opponent. Flame Blaster: A powerful triple breath attack. Queen's Judgment: A five-hit flurry. Brave Flare: Cloaks in fire, increasing fire attribute attack power. Kinship Skill: Flame Shaver Approaches the enemy and performs a backflip tail strike.

Ena's Monstie. A Mizutsune. Total length: 18m. Leviathan. Vibrant pinkish-purple fur. Cloaked in bubbles; detects enemies when they pop. Restricts opponents with bubbles and attacks with claws on long limbs and fangs. Has no wings and cannot fly. Active Skills Aqua Blaster: High-power water attribute breath. Bewitching Bubbles: Cloaks in bubbles, increasing water attribute attack power. Bubble Dance: Evades the next incoming attack once. Spiral Claw: Slashes the opponent with claws. Large single-target damage. Kinship Skill: Moonlit Bubble Restricts the enemy with bubbles and fires a water attribute breath.

Mizuki's Monstie. A Zinogre. Total length: 18m. Fanged Wyvern. Blue-green and yellow scales with white fur. Lives in symbiosis with Thunderbugs, charging itself using them and its internal power organ. Attacks with powerful limbs, lightning strikes, and a thick tail. The electricity generated is bluish-white. Active Skills Thunderbug Bullet: Launches Thunderbugs. Mid-power single-target damage. High Voltage: Cloaks in lightning, increasing thunder attribute attack power. Thunderous Palm: Slams down a lightning-clad foreleg. Thunderbolt: Strikes the enemy with lightning. Kinship Skill: Cross High Volt Charges into the enemy in a Supercharged state and unleashes a fierce assault.