78: Hera has affected every demigod in the 7's life greatly:
Percy: Is memory-wiped and sent to Camp Jupiter.
Jason: Is taken at birth, presumed dead, gifted a sword, memory-wiped, and sent to Camp Half-Blood.
Annabeth: Hera leaves her "presents," hates her, and steals her boyfriend away with no warning as soon as they start dating.
Frank: Is given a piece of firewood connected to his life force.
Hazel: The firewood is a key point in her and Frank's relationship.
Leo: Was around as Tia Callida when Leo was a child and tried to train and prepare him to be a hero. Also put Mist memories of Jason.
Piper: Had her whole relationship with Jason based on fake Mist memories.
79: The 7's families are significant in multiple ways.
Percy and Annabeth were before HOO, not them as much, but Percy's mother was taken in TLO, gave him the blessing for COA, married Gabe to disguise him, and was a great mother overall. Annabeth had annoying stepbrothers and a disliking and disliked stepmother.
Piper's dad is kidnapped by Enceladus and Caligula ruins him.
Frank's family is descended from Poseidon and can turn into animals.
Jason's mother became a mania and his sister is Thalia.
Leo's mother died in a fire and her death greatly affected his life.
Hazel's mother ended up getting them killed and sent to Asphodel.
80: The fish-centaurs, the Ichthyocentaurs, didn't want to meet Percy.