Can't be- Tonks is referred to as a girl twice, plus another time out of universe (by word of God).
Chapter 73:
"Ooh, great question!" said the other Susan Bones as she rapidly skinned off what was left of her borrowed clothes. A moment later the girl began to Metamorphose back into her more accustomed form of Nymphadora Tonks.
Chapter 29:
"Did you know there's a girl in Hufflepuff who's a Metamorphmagus?" said Hermione as they headed toward the Great Hall. "She makes her hair really red, like stopsign red not Weasley red, and when she spilled hot tea on herself she turned into a black-haired boy until she got it under control again."
I've just decided to eliminate the "fourth-year" qualifier. I'd previously meant Ranma to be separate from Tonks, but on reflection it's kind of funnier if she is Ranma.
It's the role that went to a character with a different gender, not a character who was gender-shifted while retaining their canon role. I think.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 93. The previous thread has passed 300 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,18,19,20.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: