Everybody's favorite purple ghost/Shadow Siren Vivian. So I never played The Thousand Year Door, but like I usually so I still looked into it and why there were so many pictures of Vivian over the years and started taking interest into the game. Good thing it's coming out for the Nintendo Switch next year so I can see the hype for it for myself.
Here's three different pictures of purple ghost with the funny hat.
I'm not going over this again so here's the redacted version. She's canonically a male in the original Japanese version who WANTS to be identified as a female to fit in with HIS sisters, aka the actual definition of trans. You're blinded by the butchered global version. Some of the characters in the original version of the game already know that Vivian is a guy. Same exact thing goes for Birdo. I don't care what anyone says, Vivian and Birdo will always be male in their original format before I acknowledge them as trans. Done.
I'm not going over this again so here's the redacted version. She's canonically a male in the origin