I've compiled a list of most currently-tagged touhou-inspired M.U.G.E.N characters in a m.u.g.e.n touhou -sendai_hakurei_no_miko search. There are many untagged ones, and I'm not sure if i missed any currently-tagged characters. I'm unsure if other series have had original M.U.G.E.N character artworks uploaded, so i decided to compile a list of only touhou at the moment.
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Inspired by hakurei reimu:
Sendai hakurei no miko (duh)
onimiko
white-reimu
maga-reimu
honki-reimu
hakurei_toki
meimu
Inspired by hinanawi tenshi:
g-tenko-r
amato_(mugen)
tenchi_(mugen)
buronko
Inspired by nagae iku:
uzume_(mugen)
Inspired by alice margatroid:
n_alice
poltergeist_(m.u.g.e.n)
nirvana_(mugen)
physalis_(mugen)
psyqhical
Inspired by moriya suwako:
gm-suwako
Inspired by kochiya sanae:
leviathan_(mugen)
Inspired by cirno:
nineball=cirno
nineball seraph
Inspired by hong meiling:
hei meiling
Inspired by remilia scarlet:
iblis_(mugen)
megalith_(mugen)
r.s.p._(mugen)
zatracenie_(mugen)
s_remilia
lise_(m.u.g.e.n)
Inspired by Patchouli Knowledge:
uroboros (mugen)
Inspired by Koakuma:
null existence-x
Inspired by izayoi sakuya:
satsujinki (which is also shared with toono_shiki???)
saku_(mugen)
julius_emery_(mugen) (looks like a standalone character?)
gloria
Inspired by konpaku_youmu:
sarashina_(mugen)
Inspired by onozuka komachi:
azami (mugen)
Inspired by yakumo yukari:
ishtar (mugen)
Inspired by reiuji utsuho:
jittoku seigyobou unyuho
Others:
lord tenma
Not m.u.g.e.n character tags that aren't in the touhou character list wiki:
There was also The iron of yin and yang, which was apparently a big series which spawned a lot of cross-over artworks. The legend of gluttony, according to it's wiki, is correlated.
My question is, what should be done about these character tags?
Some of the mugen characters don't tag the original characters, or the mugen tag itself. Should they imply both mugen and the original inspirations? Aliasing them and calling it a day is also an option, but it would make most artworks devoid of context.
If we want to keep them, should they appear in the List of Touhou characters wiki or should they appear in a wiki page of their own, maybe alongside other characters from other series?
If we want to be consistent, someone should tag all of the missing character tags. This is somewhat hard, since that would need a research of a 10+-years-old almost-completely-dead fandom.