Percy is the only person who could ask nico for human skulls no questions and have nico actually give them no questions asked, because he knows Percy is the only one who wont ask why he has them I doubt he'd give them to will as quickly because nico would have questions xD
1:59 I could imagine this being cannon. Paul let Percy watch Titanic with him, and when the movie is done, Percy Iris-Messages Poseidon and starts screaming at him.
0:12 percy would knock down that kids door with a knife (not riptide cause it cant cut through humans) and say "yknow estelle she said u were calling her names so i have to tell u something. SAANTA ISNT REAL!" and watch the kid cry