@aGirlofCookies okay so I was confused at first and then I realized you're mysterycake, and I will always refer to you as mysterycake no matter what.
So about your message...idrk...um I'll give you a bunch of headcanons just cause
•sometimes when they get bored, Percy and Leo go down to lake while Peru sprays water up and Leo sets his hands on fire singing 'I SET FIIIRE TO RAIN'
•Animals actually like nico, despite the whole "ghost king" thing
•whenever someone says something dirty, nice covers hazel's ears saying, 'there are little ears here!' while Percy agrees and covers nico's ears.
•nico has one of those adorable little kitten sneezes while Percy has those giant ones that can rip a ship apart
•Leo always gets his marshmallows roasted perfectly and it pisses of Percy so much
•when Leo an piper were at the wilderness survival school, Leo's hair was always unruly and unmanageable so whenever they got free time piper would comb and style his hair
•Percy is actually really good at writing because he spent so much time helping his mom, while Annabeth always had a talent for drawing. (They would be the best fanfic writer and fanartist this world had ever seen)
•for Halloween Leo and frank would always fight about who would get to be katniss
•Calypso and Percy actually started getting along after a while, calypso taught Percy gardening and it turned out Percy always had a knack for it (which pissed of Leo very much)
•Annabeth died before Percy
Um I don't really have anymore. Hopefully you're not so pissed anymore? But then there is that last hc..
Well hope you have a good day!
(Jesus Christ this is long)