After WWII, Zeus and Poseidon made Hades swear an oath that the three of them wouldn't have any more children with mortals. As of Blood of Olympus, Zeus has had two children (Jason and Thalia) and Poseidon had one (Percy). The god that they forced into the oath was the only one who kept the oath.

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25 Facts
AcakBasically if there's a topic I find interesting, I will post 25 facts about that topic. This can range from video games to books to superheroes to anything!