(Touhou 1 to 5) Purple eyes, long purple hair, wears large red ribbon in hair. Clothes are red and white, and strongly resembles a traditional shrine maiden outfit.
(Touhou 3, alternative outfit) Same as above, but clothes are mainly green instead of red.
(Touhou 6 and 7) Dark red eyes, black hair, wears large red ribbon in hair. Often carries a gohei, with many paper seals attached in streamers. Wears a red and white dress remotely similar to a shrine maiden's outfit with detached sleeves leaving her shoulders uncovered. Has a red neckerchief.
(Touhou 7.5, 10, 10.5, and 12.3) Same as above, but her neckerchief is yellow.
(Touhou 7.5 and 10.5, alternative outfit) Same as above, but the dress is black instead of red.
(Touhou 8) Same as above, but her hair is dark brown and she has a red dress.
(Touhou 9) Same as above, but her neckerchief is navy blue. Over the course of these games, her hair grew from shoulder-length to the middle of her back before it became short again in Touhou 11.
(Touhou 9, alternative outfit) Same as above, but dress is mainly blue instead of red.
(Touhou 11) Same as above, but her neckerchief is dark blue with a yellow ribbon tied to it. Shoulder-length hair. Dress is red.
(Touhou 12, 12.5) Same as above, but the neckerchief is entirely yellow again, and Reimu's hair has grown past her shoulders.
(Touhou 13) Same as above, but her hair has become shorter (possibly the shortest it has ever been). Her gohei is also much longer judging from the title screen.
(Touhou 13.5) Same as above, except neckerchief is blue again and her hair is brown and longer.
(Touhou 14) Same as in 13, but her hair is now slightly longer and her neckerchief is once again yellow. She also no longer has a ribbon threaded through the hem of her dress (it has been replaced with a lacy pattern of a similar colour), or ribbons threaded through the bottom of her arm-socks.
Shrine Maiden who Protects Dream and Tradition (TH03, TH04)
Shrine Maiden (TH05)
Eternal Shrine Maiden (SSG, TH06)
Wonderful Shrine Maiden of Paradise (TH07, TH7.5, TH08, TH09)
Shrine Maiden of Paradise (TH10, TH10.5, TH11, TH12, TH12.3, PMiSS)
Sunny Shrine Maiden (TH10.5)
Flying Mysterious Shrine Maiden (TH12.5)
Freewheeling Human (WaHH)
Shrine Maiden of the Five Desires (TH13)
Wonderful Shaman of Paradise (FS)
Speaker for the Eight Million Gods (HM)
Reimu Hakurei is the main character of the Touhou Project series, having appeared in all of the main games and in almost every game in the series. As the sole maiden of the Hakurei Shrine, she is commonly called upon (or calls it upon herself) to investigate strange occurrences throughout Gensokyo.
In earlier games, Reimu's spiritual abilities were highly limited. (In Highly Responsive to Prayers, she was unable to directly harm enemies at all.) As time passed, however, she developed her abilities, becoming able to manipulate the Hakurei Yin-Yang Orb, special amulets, and her own spiritual power to fight more effectively. Sometime between Mystic Square and Embodiment of Scarlet Devil, she realized the ability to fly under her own jurisdiction. (Before then, she relied on Genjii, her turtle familiar, to fly.)
Reimu is commonly described as easygoing, curious, dutiful, and optimistic — sometimes overly so. Her personality seems sympathetic toward many individuals; there are few characters who remain her rivals past the first encounter. Her shrine has become a moderately popular locale for some of Gensokyo's residents.