friendly reminder 1- Before meeting Luke and Thalia, Annabeth attacked monsters with a hammer.

Friendly reminder 2- Thalia is immortal, but Jason is not. So, one day will come when Jason will die and Thalia would lose him forever.

friendly reminder 3- Blackjack made hoof prints on the top of Paul's car.

Friendly reminder 4- In blood of Olympus, the Oracle stops working (this is all to those fan fiction writers )

friendly reminder 5- Nico went through Tartarus alone.

Friendly reminder 6- Nico is the only reason Percy and Annabeth survived through tartarus; he was the only one who ever visited Bob and told him that Percy was good.

That's all the reminders that come t mind. Tell me if you know any more!