The Olympia Family Visits Hogwarts
A/N: This isn't a chapter, just everything that happened before this story. Also, this is set in The Order of the Phoenix and after the Giant war, so nothing from ToA.
So millennia ago, Hecate blessed 4 of her children so that their successors would inherit the abilities they had, as long as they tamed it with wands, and only the most powerful of them could use non-verbal magic.
Then, after the Salem witch trials, the gods decided to make some interaction with the wizards in England and dubbed themselves the Olympia family, which was a royal family whose origins were Greek, and everyone in the family were extremely powerful wizards.
There are 3 kings; King Zayden, a wizard who is powerful with lightning and air magic, King Parker, who is powerful with water and storm magic, and King Hadrian, who is powerful with the dark arts and shadow magic.
Alongside them, there are 9 other ruling figures, namely; Royal Duke Aiden (Apollo), Royal Duke Noah (Hermes), Royal Duke Alexander (Ares), Royal Duke Bacchus (Dionysus), Royal Duke Henry (Hephaestus), Royal Duchess Avila (Aphrodite), Royal Duchess Olivia (Athena), Royal Duchess Daisy (Demeter), Royal Duchess Hannah (Hera) and Royal Duchess Diana (Artemis).
Anyways, only select high officials knew that they were immortal when they left for America in the 1860's, but word spread and they were known as immortal wizards.
When the gods reached America, Hecate took over the wizarding community in America and ruled alongside MACUSA as 'Lady Hecate'.
The mist won't work on wizards. The demigods would be affected by most spells and potions (including Veritaserum) but the Imperius curse won't work on them, the Cruciatus curse might pain a bit, and the Killing curse would stun them for a would also be great with Occlumency and Legilimency because of the nightmares. All of them will have PTSD, and the most severe cases will be Nico, Percy and Annabeth.
Now, to strengthen relationships with wizarding Britain, Hecate reached out to Albus Dumbledore, the headmaster of Hogwarts, if she could send a few kids (demigods) from the Olympia family. They had a chat, and Dumbledore told her about the Order of the Phoenix. Hecate asked if the kids could join and if they could teach the students of Hogwarts Occlumency, Legilimency, Fighting with weapons, Martial Arts and Survival Skills, so as to prepare them for the upcoming battle. Dumbledore agreed to this.
The demigods of the eldest gods and goddesses will be princes and princesses, while the others will be marquises and marchionesses.
Anything which isn't covered in this would probably be explained later.
~Annabeth McGrace