1 Work in Harry Potter & Pomona Sprout
Peeves, though he was nasty about everything else--ickle firsties and orphan girls--got it immediately. For all six years of Harry's Hogwarts tenure, he dropped water balloons on the heads of anyone who misgendered her.
Professor Binns never quite figured it out, but he didn't know any student's name. Nearly Headless Nick gallantly and somewhat awkwardly called her lady and tried to hold open doors for her, despite the fact that he couldn't open them.
Snape called Harry "Mr. Potter" for all seven years that he was in Harry's life. Around year three, Ron stopped counting the detentions he got for his increasingly sarcastic responses to this.
- Part 8 of boy with a scar