Gensokyo, the second dream... Touhou Project is not only known for its amazing OST, but also for its ENORMOUS cast of characters. Most of the characters are female, and are pretty original (as far as I know). Here is a list of the most notable:
A character who didn't quite get into the game. They were going to be a playable character with the occupation of a nurse
Perfect Cherry Blossom
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Letty Whiterock
none
Chen
none
Lily White
none
Prismriver Sisters
All none
Yuyuko
none
Yukari
none
Ran
none
Imperishable Night
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Wriggle Nightbug
none
Mystia
Rumia
Keine Kamishirasawa
Fuijiwara (?)
Tewi Inaba
None
Reisen Inaba
None
Eirin Yagokoro
none
Kaguya Houraisan
(surprisingly) Fujiwara
Fujiwara No Mokou
None
Touhou 9: PoFV (actual name coming soon)
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's desciption
Shikieiki Yamaxanadu
none
Komachi Onozuka
none
Medicine Melancholy
none
Mountain of Faith
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Shizuha Aki
None
Minoriko Aki
None
Hina Kagiyama
None
Nitori Kawashiro
None
Aya Shameimaru
Hatate
Kanako Yasaka
None
Suwako Moriya
None
Subterranean Animism
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Kisume
none
Yamame Kurodani
none
Parsee Mizuhashi
none
Yuuhi Hoshiguma
none
Satori Komeiji
None
Rin "Orin" Kaenbyou
Utsuho
Utsuho "Okuu" Reiuji
Orin
The "main" villain of Touhou Project. She became a Yatagarasu (sun god) and now possesses the ability to manipulate Nuclear Fusion!
Koishi Komeiji
None
Undenfied Fantastic Object
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Nazrin
none
Kogasa Tatara
none
Ichirin Kumoi
none
Unzan
none
Minamitsu Murasa
none
Shou Toramaru
none
Byajuren Hijiri
none
Nue Houjuu
none
Ten Desires
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Devine Spirit
none
Kykouko Kasodani
none
Yoshika Miyako
none
Seiga Kaku
none
Soga no Tojiko
none
Mononobe no Futo
none
Toyosatomimi no Miko
none
Mamizou Futatsuiwa
none
Double Dealing Characters
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Wakasagihime
none
Sekibanki
none
Kagerou Imaizumi
none
Benben Tsukumo
none
Yatsuhashi Tsukumo
none
Seija Kijin
none
Shinmyoumaru Sukuna
none
Raiko Horikawa
none
Legacy of Lunatic Kingdom
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Seiran
none?
Ringo
none?
Doremy Sweet
none?
Other
Name
Image
Who LuckyEmile views as their love interest
LuckyEmile's description
Hatate Himekaidou
Aya
Suika Ibuki
None
A strong oni obsessed with saké. She hangs around the Hakurei Shrine a lot, and can grow or shrink to whatever size she wants.
Hieda no Akyu
Kosuzu
The ninth incarnation of the child of miare. She is the authour of the Gensokyo Chronicles and looks a bit like a certain someone.
Kosuzu Motoori
Akyu
A human who owns a book shop full of books written by yōkais.
Watatsuki no Toyohime
none
The true villain of Touhou Project! She is more carefree than her sister and is most in things for fun. She possesses fans which are capable of mass destruction!
Watatsuki no Yorihime
none
The true villain of Touhou Project! She weilds a mighty sword and is a master swordsgirl, and can invite gods into her body to gain powers like pyrokinesis and the ability to cut light!
Reisen II
none
Tenshi Hinanai
Yuuka
A die-hard masochist
Iku Nagae
none
Great Dragon God
none
The strongest God in Gensokyo! Last seen at the creation of Gensokyo, where he aided Yukari. He can travel through any barrier and can create and destroy anything!
Kasen ...
none
Renko Usami
Maribel
Maribel ...
Renko
Rinnosuke ...
none
Shanghai
None
Hourai
None
London
none
Titania
none
A human-sized dolls, and thus the second largest of Alice's dolls.
Goliath Doll
none
Alice's ultimate doll. It has incredible size and strength, but has terrible speed. It can be seen wielding two swords.