Because there's so many creative people in this fandom but I currently gotta wait til tomorrow until I can do a lil JCU Art dump, have my pronouns headcanons of a few JCU charas :D if you find any characters missing that you want to know my headcanons of, just let me know!
Zeke: they/them and ze/zir
Fips: he/they/it
Klaus: he/him (transmasc icon tho)
Eos: he/him tho doesnt really care much
Rhun: xier/xies when combined, she/her for White and he/him for Dark
Iris: she/they/it
Sandfrau (headcanon name Sana): she/dream
Ludori (Wichtel No. 17): she/frost
Ruprecht (Wichtel played by NTK): he/him
Pups (Wichtel played by Kaan, who I've come to calling Puppal): he/void
Oskar: az/azale/pet/petal
Ju: he/she plus genderfluid bby
Julia: she/they
Joon: he/him
Rezo: he/it/sci while deffo being agender
Jerky: he/cel (as in, celestial)
Rose: she/flow
Wabou: he/it/leaf
XioXio: nyph/neb (as in, nebula)
Quick disclaimer for the EotG, I think that most of them arent really bound by pronoun standards on their planets as we know them, so they get to do just whatever they want pretty much
Minty:she/they
Rhun's MV Daughter (headcanon name Eirlys): she/tink
Rhun's tailor (headcanon name Silkena): she/web also transfem
Friendly disclaimer that I'm a agender person who mostly uses neopronouns, so I projected quite a bit in here. If you have different opinions and thoughts, that is totally fine by me and I would love to hear your thoughts, long as we can all stay nice about it!:]