Gender: Female Transformation: Airy Heart Family: Mother (Si-arin), Father (Sa-aru) (both are kind), Older Brother (Cheon Siru - they fight constantly and don't get along, though they are occasionally on good terms) Likes: Sweet food Hair Style: Long hair (before transformation), medium-length twin tails (after transformation) Wings: Heart-decorated Airy wings Weapon: Sword She is a 2nd-year student at Hwaseong Middle School.

Gender: Male Transformation: Airy Star Family: Mother (Si-arin), Father (Sa-aru) (both are kind), Younger Sister (Saian - they fight constantly and don't get along, though they are occasionally on good terms) Likes: Spicy food, Sundae-guk (blood sausage soup) Hair Style: Short cut (black before transformation), long hair (turns blue after transformation) Wings: Star and snow-decorated Airy wings Weapon: Gun He is a 3rd-year student at Hwaseong Middle School.

Gender: Female Transformation: Airy Clover Family: Mother (Ha Nisu), Father (Bau) (Mother is kind, but Father is angry toward Naru), Older Sister (kind, also suffers from Father's temper) Likes: Being loved, Mother, Older Sister Hair Style: Bun with bangs covering one eye (dark green before transformation), long hair (turns green after transformation, revealing the covered eye) Wings: Clover-decorated Airy wings Weapon: Bow She is a 2nd-year student at Hwaseong Middle School.

Gender: Male Transformation: Airy Moon Family: Mother, Father (both were kind, died due to war) Likes: Saian (but Saian rejected his confession) Hair Style: Short cut (brown before transformation), long ponytail (turns yellow after transformation) Wings: Moon and starlight-decorated Airy wings Weapon: Sword Features: Always wears a knight's helmet, even after transforming. He is handsome when he takes it off. He is the first character who was a knight to transform into an Airy. He is a 2nd-year student at Hwaseong Middle School and transferred in Episode 6.

Gender: Male Transformation: Airy Music Family: Mother, Father (kind), Younger Brother (cherishes the fairy Sataru) Likes: Saian (Saian likes him too; they have a mutual crush) Dislikes: Epher (they are rivals and fight constantly) Hair Style: Short cut (dark purple before transformation), long hair (turns purple after transformation) Wings: Musical note and melody-decorated Airy wings Weapon: Boomerang Features: A prince fairy from the Airy Kingdom. He is the first fairy with the ability to transform into a human. He is a 2nd-year student at Hwaseong Middle School and transferred in Episode 6.

Gender: Female Transformation: Airy Sun Family: Mother, Father (both are kind) Likes: Spicy food, drawing, sweet food Hair Style: Short bob (dark red before transformation), long hair (turns red after transformation) Wings: Sun-shaped Airy wings Weapon: Spear

Helps the Airys.