Touhou characters (going in the order of their first appearances); Reimu, Singyoku F, Singyoku M, Kikuri, Kongara, Yugen, Mima, Elis, Rika, Meira, Noroiko, Matenshi, Sariel, Marisa, Ellen, Rikako, Kotohime, Rukoto, Kana, Chiyuri, Yumemi, Orange, Hikariko, Kurumi, Ellie, Mugetsu, Gengetsu, Yuka, Wheelie, Ayana, Sarah, Louise, Yuki, Mai, Yumeko, Shinki, Alice, Jackie, Labelle, Satsuki, Rumia, Cirno, Daiyosei, Koakuma, Patchouli, Hong, Sakuya, Remilia, Flandre, Maribel, Renko, Letty, Lily, Lunasa, Merlin, Lyrica, Yomu, Yuyuko, Chen, Ran, Yukari, Suika, Rinosuke, Tokiko, Wriggle, Mystia, Keine, Moko, Tewi, Reisen, Kaguya, Erin, Toyohime, Yorihime, Rei, Medicine, Sunny, Luna, Star, Komachi, Shiki, Aya, Akyu, Shizuha, Minoriko, Hina, Nitori, Momiji, Suwako, Sanae, Kanako, Iku, Tenshi, Kisume, Yamame, Parsee, Yugi, Utsuho, Rin, Satori, Koishi, Kogasa, Ichirin, Murasa, Nasrin, Sho, Hijiri, Nue, Hatate, Kyoko, Kasen, Yoshika, Seiga, Tojiko, Futo, Miko, Mamizo, Kokoro, Kosusu, Benben, Yatsu, Raiko, Wakasagi, Seki, Kagero, Shinmy, Seija, Seiran, Ringo, Doremy, Sagume, Hecatia, Clownpiece, Junko, Sumireko, Eternity, Aun, Nemuno, Narumi, Teireida, Satono, Okina, Joon, Shion, Miyoi, Keiki, Mayumi, Kutaka, Eika, Urumi, Saki, Yachie, Yuma, Mike, Takane, Sanyo, Misumaru, Tsukasa, Megumu, Chimata, Momoyo, Mizuchi, Enoko, Biten, Chiyari, Hisami and Zanmu.

Wow, that's about 167 Touhous I've named and even know by heart.

Other than the multiple variants of some Touhous here (PC98 Reimu, Mima's HRTP outfit, Rika's tank outfit, SOEW Marisa, PODD Marisa, PC98 Yuka, PC98 Alice, Evil Keine and the two evil Kasens), I want to know the names of the small blonde and pink-haired chick with the black bow between Mugetsu and Shinki, the praying fairy in front of Kotohime and also who's the brunette in a green dress behind Akyu and Rinosuke.

Danzig87 said:

I want to know the names of the small blonde and pink-haired chick with the black bow between Mugetsu and Shinki

That's pink-haired_makai_resident_(touhou) and blonde_makai_resident_(touhou)

Danzig87 said:

also who's the brunette in a green dress behind Akyu and Rinosuke

I have no idea too. No one of minor characters on Touhou wiki seems to have similar design.

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The one above kotohime is the wish granting fairy from touhou 1’s endings !

RockmanXtreme2 said:

The one above kotohime is the wish granting fairy from touhou 1’s endings !

Her tag is yin yang orb (fairy), I've already added it

Danzig87 said:

So basically they're left nameless and are generically referred as just the "Makai Residents". I'll name them "Pixie" and "Demonica" instead (like how I name the jacket girl "Jackie" and the label girl "Labelle").

My best guess is that she's likely the artist's original character (OC).

It's 梅霖の妖精 or "Fairy of the Rainy Season" from Curiousity of Lotus Asia Chapters 8 and 9: https://dic.pixiv.net/a/%E6%A2%85%E9%9C%96%E3%81%AE%E5%A6%96%E7%B2%BE

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