who in the tg verse is trans? (except mutsuki, we already know about him)
thank you so much for the ask!! i look forward to answering this. most of my trans interpretations of characters are headcanon-based rather than something i have a lot of evidence from the canon content for. i hope that's okay!!!
i started viewing mayu as a transfeminine enby about a year or so ago? it's canon that she has very severe lack of self-esteem in her appearance despite carrying herself like she's confident. i kinda tie this into gender dysphoria,, i think she is very far along in her transition and has had both top and bottom surgery, is stealth, and she passes as a cis woman always, but to her, she is always finding flaw with parts of her appearance and is extremely paranoid about being perceived as manly or masculine. one thing she has always known about herself with absolute certainty, no matter how confusing any other aspects of herself may be to her, is that she is not a man. at the same time, she feels a big disconnect from womanhood as a Role in Society because she has never ever wanted to be a woman who takes care of a man or is expected to be nurturing by default, even though she identifies with femininity very highly. this is how she landed on her nonbinary identity. she doesn't disclose her nonbinary identity to anyone until she is certain they don't view her as masculine or manly, until she feels safe, and when she does disclose, many people assume she was AFAB and she doesn't correct them.
i have a bit of a complex idea of juuzou's relation to transness. juuzou, to me, is intersex: he specifically has swyer syndrome. he relates heavily to aspects of cis manhood and also heavily to aspects of trans manhood, and rather than identifying as a cis man or a trans man, he is somewhere in the middle of these two categories and he takes pride in it. i like relating the genital torture and mutilation big madame performed on him to how many intersex children have unnecessary procedures performed on them in infancy. i don't have the metaphor all the way worked out but it's something i ponder and will probably have more of a solid thought on in the future. stay tuned. or feel free to add on if you would like.
probably my all time favorite trans headcanon for any tokyo ghoul character is trans girl hinami fueguchi. i think she came out very young and both of her parents were extremely supportive so she started transition young too. her father took care of all of her medical care and her mother took care of the more touchy-feely parts of it. they loved her so much. she is broadly accepted by all that she is surrounded by. no one in her daily life is or has been purposefully transphobic, though they do sometimes have ignorant comments or questions. touka has definitely slapped the shit out of someone for one of these comments/questions, but the person saying it never means any harm. i also headcanon kaya irimi as a trans woman and i view her as having taken over hinami's care after her parents died. later on, when hinami is living with kaneki's group, i think it is both shuu and kaneki that stay on top of it. mostly shuu tbh. when she's in aogiri, she has learned how to access HRT and stuff all on her own so she independently takes care of it!
nowww onto kaya irimi. okay. this one i don't have a ton of complex thoughts on other than i think she is a femme lesbian and she deserves a butch partner. who that should be...? i don't know. sometimes it's hirako in my mind palace. i should write a fic abt this. anyways yes she takes wonderful care of hinami and was extremely excited to have a sister (if not sisterly figure) who was also trans. she loves touka so much obviously but her bond with hinami was special in a somewhat different way because they were both trans and irimi felt like she got to impart wisdom of trans girlhood onto hinami that she never got to give to anyone else. hinami is good at comforting her too like not in the most conventional sense of comforting someone but hinami's existence as a young trans girl who has had a better life than her (in certain ways) gives her so much hope. sometimes she gets really dark and dysphoric and wonders why she even bothers to continue her transition when it's so hard, and harder tenfold for ghouls, and then she thinks of hinami and is like "if not for myself, i have to do it for her." bc hinami looks up to her so much!!!
seidou being a transmasc enby is another one i really enjoy. i think that pre-ghoulification, his identity was a lot more binary and less complex at first glance. he identified strictly as a man and as straight, despite having semi-frequent moments where he questioned both of these aspects of his identity. seidou was constantly around men who were very macho and cisnormative in their manhood at the CCG and he tried to model himself after them because he felt like that was what he had to do to even remotely fit in. he was so unaccepting of juuzou in my mind bc he was jealous of how juuzou had no care in the world about the way he chose to present himself and was confident in his manhood. basically, seidou had always wanted to explore getting more GNC with his presentation, his potential attraction to men and allowing his gender to take less of a distinct shape. but felt he couldn't because he was valuing trying to fit in with the people around him as best as he could over anything else. post-ghoulification, he had been brutally tortured and had his sense of self torn asunder. he had become a ghoul— something he hated and something society deemed completely unacceptable. he had been turned into a monster too by being forced to eat his parents. seidou gave up on trying to fit in a bit at this point in most aspects, knowing he could never get back to how he was before. if he was going to be someone completely unacceptable bc of his species, why care any longer about what people would think of him if he explored the things he had been pushing down for so long?
this was nice to answer!!! thank you so much!!!! i honestly have more trans headcanons for tg characters but these are my main ones. i hope you will find them enjoyable :3