On fatal flaws...
We all know what Percy's flaw is, loyalty. He stays by your side no matter what even if he shouldn't, even if it hurts him. he is loyal like a dog. He would follow you anywhere. Would stand by you in any situation. Would come at your call to the back and close his eyes without hesitation as you level a gun between his eyes.
Lee's fatal flaw is love. His love is bright and all encompassing. He loves freely and unconditionally. He would do anything, 𝘢𝘯𝘺𝘵𝘩𝘪𝘯𝘨, for the people he holds dear. Climb any mountain, slay any beast if he believed it would bring him closer to you. His love is like the sun, burning and inescapable. He would chase you to the ends of the earth, if only to hold you close(he loves like his father, possessive and obsessed, clutching tightly in his hands until it turns to ash)
Castor holds grudges. It takes forever for him to let go of the slightest grievance to himself or the few he holds dear. He will make sure to settle every score tallied in his books. Dionysus still hates the sea for their crimes against his wife. They're all the same in his eyes, piers and thieves who use those around them.
