I've only tagged the characters I recognized. There are some that I have seen on some other pixiv posts, but I don't know their names. The green haired character with horns seems to be EX Keine, but I'm not sure.

Touhou fancharacters unite?

This is a Gathering of Pixiv's Touhou Original Characters

The blue Hina is not Hina Kagiyama but 31_Violence's Original Character Kuma-Hina (Tagged クマ雛 on Pixiv)

Myschi said:
This is a Gathering of Pixiv's Touhou Original Characters

The blue Hina is not Hina Kagiyama but 31_Violence's Original Character Kuma-Hina (Tagged クマ雛 on Pixiv)

What's the difference between her and hina, aside from the colors?

iny said:
What's the difference between her and hina, aside from the colors?

Bags under her eyes (隈, Kuma), hairstyle and her true identity. She is personification of curses.

See also pixpedia article.

Ugh, some of these seem to have as much originality as Sonic recolors. I'm getting a disgusting "original character, please dont steel" vibe here.

Also, the Aki sisters are strangely missing.

I lost it when I saw that the artist included that mock character from the "ZUN teaches Drawing" picture.

[deleted]

awesome theyre all fanmade characters! mitori kawashiro is awesome!!!!!!

motions of these OC I know ... but I wonder who else?

especially the two girls in the lower left, the girls with yellow hair and the girl with white hair and ears like a wolf (again if they are a wolf ears) to others I know ...