Okay, I had a thought a few days ago and have been trying to get it right. But. I think I figured it out. (Don't expect 100% accuracy)
So, Pallas and Athena. Athena bursts out of Zeus' head, and confusion and chaos and Hera, so Athena ends up at Triton's camp/school/military base thing. There, she meets Pallas, Triton's daughter, and as such, is Poseidon's granddaughter. The two become close, very close. I've seen them be close as sisters and be lovers, and I'm not 100% sure what they were, but, I mean, they were Greek...
Nevertheless, Pallas means everything to Athena. Athena grows close with Pallas' family, I mean, her mom lives in her dad's head and said dad kicked her out, so...
Then, tragedy strikes. Pallas dies at Athena's hand. Whether it is a true accident, or Zeus' pride... Athena doesn't know what to think. She is sent away, basically banished by the grieving, who forget that she, too, is grieving a great loss.
Poseidon remains bitter, and continues pushing Athena away. They both remain bitter towards the other for thousands of years, and encourage their children to do so as well.
Put a pin in that.
Remember how there were a bunch of people that were really angry about Annabeth's casting? They were wrong, of course, but hear me out. Leah does look practically opposite to how Annabeth was described in the books. In fact, Walker looks more like Annabeth than Leah does (though, you gotta admit, they are their characters irl too, especially Walker)(also, i think the Annabeth being assumed to not be smart because she was blonde doesn't work as well as institutionalized and the many other types of racism. Athena's "gift/curse/however Annabeth described it" is still at play, so people really need to stop it with the hate towards Leah and Riordan)
ANYWAY I think it would be interesting if they made blondeness/light hair a Poseidon trait, and that's why Athena has avoided it like the plague since Pallas' death: its too painful. Contrastly, Poseidon gives his children light hair in honor of Pallas, as well as to torment Athena.
Specifically, Percy looks basically exactly like Pallas. It would drive this point further if the casting of Athena looks just like Annabeth, too. Thus, when Athena first tells Percy, "I do not approve of your relationship with my daughter," we see so much more than just a spat over Athens (I mean, really, a salt water spring?), we see a romance to last the ages, and a tragedy who's thorns grow ever sharper. Athena is not just being selfish, not wanting a reminder of love lost, but she knows the fierceness of an ocean's love, and would not wish it lost on anyone, especially one of her own. Percy has had a choice thrust upon him: he will be the prophecy child. To the best of everyone's knowledge, Percy will die at 16. Athena will do everything in her power to not hear her daughter cry tears over a child of the sea, not even she knows then so well herself.
(It could also be interesting if Percy looks like a mix of Athena and Pallas (because we know genetics are weird with the Gods), since that would cause extra pain in Athena's heart)(also makes Poseidon extra sad)
(OR Athena makes all her children look like Pallas to honor her. I don't like that one as much)
I also really like an idea I had that it was NOT Poseidon and Athena who invented the chariot, or however that went. Pallas and Athena invented it together, and Athena still uses that first chariot to this day.
Also, it could add some nuance to the Mark of Athena. When the Romans stole Athena, they erased Pallas from her story. Minerva looks like Pallas, and her love for Pallas is gone. She is not just searching for herself, she is searching for the string so interwoven with her own they are the same: she is searching for the soulmate erased from her story.
ALSO, or would be interesting to see this dynamic play out in the 4th book, when Percy is thought to be dead.
I want this to be released as a short film (I would be a great Pallas???? Think about it???? Am I selfish to think that??? Ambitious??? Yes???? What's your point?????????)















