Last new OC of the day, I promise (and they're all for Pride month - two OCs I introduced recently are Pride pals, too - Peter and Judy, who were the opposite genders at birth and named Peyton and Jude, respectively, before transgendering when they were both 17).
Anyways, Blue is a veterinarian who lives in the Hills of Sprout above their veterinary clinic, where they care for all pets (though the anthropomorphic ones go to the normal doctor's office). Blue was born on January 27, 1989, when they were assigned male at birth (AMAB), and appeared in three episodes of the second season of Kari and Friends when they were nine. However, when they turned 31, they realized they had a liking for girls' properties after realizing since they were a toddler that being male probably wasn't right for them, and decided to change their pronouns.
Sorry, I'm in a probably never-ending Blue's Clues (but mainly Blue's Room) phase, but I didn't name Blue after the main character - I just found their name in a list image of gender-neutral names and I found out yesterday about a boy named Blue who had his own Toys R Us (https://www.youtube.com/watch?v=fwA68tUhKUg).