ohohoho im going to get jumped for some of these.

anaxa: he/she unlabeled transfem. trust me. on a serious note i see her as very gnc and purposefully presenting androgynous to confuse okehema and the grove. "so cis men can't be androgynous ko?" they can however ANAXAGORAS is not cis. no cis bone in her body. all her students are transgender and they must have gotten hrt advice from SOMEBODY. (its anaxa)
i also see anaxa and aglaea having a ragebaiter-ragebaited sibling relationship. they argue like immature siblings to me. like siblings they care for each other and dont really hate one another (revealed later in the story) but anaxagoras was placed in this world to anger people.
he's autistic. hear me out! its not just because he's smart, ok? he talks about dromases 24/7. he addressed himself as the beast king (dromas event). the final boss of dromases. this man has a dromas onesie. when dhpt (a dromas hybrid guy) got his banner, guess who reran? ANAXA. he has a special interest bruh. he does NOT play about dromases. i also hc him rehearsing conversations in his secret alchemy lab.

STARDEW VALLEY HEADCANON BOMB
Haley is a lesbian. this is true and canon
Clint is weird and off-putting because of his intense anxiety and isolation due to his job (of which his father pushed him into)
Sam is a trans guy. Many people also agree he has ADHD.
Emily would learn to style hair with different textures! She'd learn this and help Maru with braids🙂‍↕️
Autistic Maru and Demetrius✅ She's so me
Demetrius tries to be there for Sebastian but struggles because he just doesn't know how to approach being a stepfather. (not excusing it though)
Sebastian is wasian
Jas is black
Half the town is trans and/or autistic because I say so
Shadow people don't really care for genders but Krobus uses he/him just for the sake of simplicity... that's why in SVE people in the adventurer's guild will use they/them on krob
Marnie checks in with each animal at the start and end of the day in winter to make sure they're extra warm and loved

I HAVE SO MANY PAUSE im too shy to say but i love the voiding headcanons people have for spoke! also that all the blobs in uu are demons is so peak too (wemmbu, zam etcetc).. i usually just enjoy seeing all the fanart and headcanons people give to uusmp characters cuz they're all so different but so amazing!! ALSO ANOTHER FAV OF MINE is that eggchan can see spirits cuz he's an angel (eyeball lol) so his render distance is lowered cuz he doesn't wanna see too many. i also believe that he's wemmbus guardian angel/protector (and that he assigned that himself) and that only he can calm him down cuz they've been bffs since forever okay i have more but im getting shy and paranoid BYE