Name: Cirno Species: Fairy Title: Ice Fairy of the Lake Ability: Manipulating cold Residence: Misty Lake Personality: Childish and mischievous, not very bright. Reimu and Marisa treat her as a low-level youkai to be easily brushed aside. She usually plays by instantly freezing frogs and then putting them in water to revive them. About one in three times, she fails and the frog shatters. Overview: She emits cold air from her body all year round, regardless of the season, making it cold around her. Since she instantly freezes anything she touches, one risks frostbite even if she is sleeping. While fairies are considered "lesser than humans," Cirno is exceptionally powerful among them.

Name: Daiyousei (Great Fairy) Species: Fairy Title: Fairy Found in the Mist Ability: Swimming through mist Residence: Misty Lake Personality: Like other fairies, she is cheerful, mischievous, simple, and expressive. She has a relatively reserved personality for a fairy. Overview: Commonly called "Dai-chan." While fairies are lesser beings, those with significant power are called "Great Fairies." The fact that she lives in the Misty Lake—a place so devoid of sunlight that fairies call it the "Lake of Death"—is a testament to her strength. She is often seen alone with Cirno, though she isn't particularly resistant to cold.

Name: Lily White Species: Fairy Title: Fairy that Heralds Spring Ability: Announcing the arrival of spring Residence: Unknown Personality: She has an innocent, spring-like personality, but apparently gets stressed when she can't move to her heart's content outside of spring. Overview: A white-clad fairy who appears when spring arrives. She is also known as the "Spring-Heralding Spirit." She is a famous fairy in Gensokyo, serving as a seasonal word for spring. While not as powerful as Cirno—having been caught by human children or almost bottled by Sakuya—she enters a state of excitement during spring and may scatter danmaku. Her abilities seem to increase then; Sunny Milk once tried to mess with her in early spring and reportedly regretted it. She sometimes cosplays as Eiki Shiki, Yamaxanadu, known as "Lily Black," but it's just her clothes turning black.

Name: Sunny Milk Species: Fairy Title: The Brilliant Sunlight Ability: Refracting light Residence: Near the Forest of Magic Personality: Her energetic and bright nature makes her seem foolish, but she is actually the sharpest compared to Luna Child and Star Sapphire. Like a true fairy, she loves pranks. Overview: She almost always acts with Luna Child and Star Sapphire; the three together are called the "Three Fairies of Light." Sunny Milk is the leader of the trio, and most of their activities are her ideas. She is often simply called "Sunny."

Name: Luna Child Species: Fairy Title: The Quiet Moonlight Ability: Muffling surrounding sounds Residence: Near the Forest of Magic Personality: Mischievous and childish like a fairy, but more cautious than Sunny or Star, often playing the "straight man" role. Overview: The most intellectually curious of the Three Fairies of Light. Unusually for a fairy, she likes newspapers and books, and even owns reading glasses. She is said to be the ultimate weapon for hide-and-seek because she can erase sound. She is also a klutz. She likes bitter things like coffee and butterbur sprout miso, and keeps artificial items like stuffed animals and dolls in her room, making her slightly different from other fairies. She is often simply called "Luna."

Name: Star Sapphire Species: Fairy Title: The Pouring Starlight Ability: Sensing the presence of moving things Residence: Near the Forest of Magic Personality: Airheaded yet somewhat calculating and shrewd. She is particularly quick-witted among fairies. Overview: Often called "Star" for short. Her hobby is mushroom bonsai. She plays an indirect but vital role in completing pranks or escaping using her ability. Because she can track the location of all living things, she is reportedly never allowed to be "it" in hide-and-seek.

Name: Clownpiece Species: Fairy Title: Fairy of Hell Ability: Driving people to madness Residence: Hell Personality: Highly curious, she very much likes the surface world, which is beautiful and full of life unlike Hell. Overview: A subordinate of Hecatia Lapislazuli and a fairy of Hell. Accustomed to the fires of Hell, she is extremely resistant to heat and gets more excited the hotter it gets. Conversely, she is weak to cold and tends to stay indoors when the temperature drops. Having lived in Hell, she is ignorant of surface culture and food. The Three Fairies of Light and Hecatia call her "Piece," and the fairies describe her ability as a "charming prank ability." First person: I (rough/childish).

Name: Eternity Larva Species: Fairy Title: The Butterfly Fairy Who Approaches God Ability: Scattering scales Residence: Garden of the Sun / Forest of Magic Personality: Usually gentle. Even if a battle is happening somewhere, she just brings a few power-up items and goes to play. However, during the Four Seasons Incident, she went out of control, unable to handle her overflowing power. Overview: A swallowtail butterfly fairy embodying insect growth, rebirth, and metamorphosis. She seems to have known Cirno for a long time, and they used to compete over who would be the ruler. She likes warm places and sunlight, usually basing herself in the Garden of the Sun. On the other hand, she dislikes the cold and avoids the Misty Lake (no sunlight) and the Hakurei Shrine (too windy). In winter, she has nothing to do since she doesn't go out, so she moves to a villa deep in a cave in the Forest of Magic. She redecorates the room to look like summer and just lazes around until spring comes. Commonly called "Larva."