I mean. There's Sasuke for you. There's a reason his fights with Percy have to be taken outside city limits. :'D

WELL THERE YOU GO. Percy can totally bring up the underworld--he's not exactly best friends for life with Hades, but they're like...tentatively allied, I guess? (And he's good friends with Hades' son!)

I'll be doing an open post soon too, with a prompt for his hellhound to make friends with as many new people as her poor doggy brain can handle. How do they feel about large mastiffs? :3c