for me, it's roleplaying on certain sites (like fandom wikis) and going "hi i'm rose quartz" "pearl is my girlfriend" "you're wrong, my favorite food is tacos" maybe it's the first person writing that creeps me out?

and i can't forget people who throw fits because the creator keeps jossing their shitty headcanons/aus and accuse the creator of not knowing their character or being a shitty writer "i know sephiroth best!!!!!!!!"