Cirno the strongest!!!

Personality
Cirno is a tomboy with a big ego, her IQ isn't great and claims to be the strongest person in gensokyo. Despite this She's generally strong for her kind but her strength is matching the power to weaker youkai. She is considered childish and an idiot to others but that doesn't stop her. She's friends with other fairys and youkai such as Daiyousei, Rumia, Letty, Luna Child, Sunny Milk and Star Sapphire. She hangs out in lakes to play with her friends and freeze things.

Appearance
Since I'm lazy I'll just paste this "Her design in Embodiment of Scarlet Devil, Perfect Cherry Blossom and Double Dealing Character shows that Cirno has aqua-colored eyes and hair. She wears a blue ribbon, light pink blouse, blue jumper dress and seems to be wearing white socks. She also has icicle-shaped wings. In Phantasmagoria of Flower View and Touhou Hisoutensoku's official art, her ribbon is green instead of blue and her sprite in Phantasmagoria of Flower View still keeps the blue ribbon. In Fairy Wars, her bow is once again blue. Her blouse has been changed to white and she seems to have bigger eyebrows (because she was drawn by Makoto Hirasaka). It's been said that Cirno is one of the easiest designs ZUN has done.

Her alternative outfit in Phantasmagoria of Flower View is same as her normal outfit, except her bow is a darker shade of green, her blouse appears light purple, and her dress is purple as well.

Her appearance in Hidden Star in Four Seasons gives her tanned skin, a flowery vine wrapped around her body, and a sunflower ribbon around her neck. This design is a reference to the character "Tanned Sakura" from the Marvel vs. Capcom series, who in turn is a reference to the character Evil Ryu, a corrupted version of Ryu. The sunflower on her chest may be a visual reference to Evil Ryu's hole in his chest.

In the Trial+ version of Perfect Cherry Blossom, she appears with a white sash bow around her waist. This only applies to her portrait, her boss sprites lacks the extra detail. Notably, this has been the only time Cirno had this extra accessory, it has since been gone and never appeared in any other future games or print works."

Skills and Abilities
Cirno as a fairy has the ability to fly around with her wings. Cirno's special ability is the ability to manipulate cold, "to the point of being able to freeze water. However, even while saying "manipulate", when coldness is in an omitted state, it seems like her surroundings are chilly even in summer. In battle, she uses this ability to attack others with icicles, huge ice cubes, or wieldable weapons like swords, but also to freeze her opponents or their danmaku. However, despite being able to freeze something hot like flaming danmaku, she is unable to freeze lasers." "In the games as she generally only shows up as stage 1~2 bosses, she isn't that strong. In particular, fairies have an existence below that of humans. However, among fairies she possesses unusually strong power. She was playable in Phantasmagoria of Flower View and was able to defeat Reimu Hakurei, Marisa Kirisame, Sakuya Izayoi, etc. Technically when she "defeats" Aya Shameimaru and Yuuka Kazami, she didn't really defeat them as they still appeared unhurt after battle, implying that it was Cirno who ran away. In Fairy Wars, even though she wins when she battled Marisa, the one whose illustration showed to be "defeated" was Cirno; it was a simple case of Marisa letting her guard down.

In Perfect Memento in Strict Sense, according to the other fairies, while such things are written as "if she schemes, she is caught, so it is good even to refresh oneself of one's habitual anger," among it, there does exist the warning "if you meet her, you should flee." Furthermore, Eiki Shiki, Yamaxanadu commented on her saying "although you are a fairy, you possess great power". Since she goes beyond the limits of fairies, there may be the possibility of dying.

If humans were to fight her gracefully, it would seem that the weapon would become frozen and it wouldn't be possible to win to begin with, but if we were to just run away, if we poke at the point that she is an idiot, we are able to run away immediately, since she is not able to answer even simple riddles."

She also has the ability of reviving or regeneration but only with the ability of coldness.

Relationships
TTM: They both like freezing frogs so they're friends.

Connor: Too braindead to think about why she should hate or like him so nuetral relationship.

MarieBMS: Cirno is usually wondering around probably seen her a couple times without MarieBMS realizing it so also neutral relationship.

Sandman: They probably go to a lake nearby if they exist even so they're also friends.

Trivia
Cirno is technically the strongest since she appears in games even though she has no purpose in there, the reason reimu decides to investigate in touhou 18 is because she found a cirno card.

Cirno's IQ is 9

Cirno likes freezing frogs

Cirno has a big ego so just try to make her seem strong or smart since she's basically ya know d u m b

Cirno can't really be a threat unless you rely on physical combat to attack her. Cirno can be beaten incredibly easily but she can be strong sometimes.