Pact of the Big Three

The Big Three Pact was a deal made by the Big Three gods, Zeus, Poseidon, and Hades, after World War II. Because of the potential danger of The Great Prophecy, they vowed to have no more children. This pact was lifted after The Second Titan War.

Examples of the Pact being broken

 * Zeus broke the pact first when he saw a TV star, Ms. Grace. With her he had a child, Thalia Grace. Later, his Roman counterpart, Jupiter had a child with her, named Jason Grace.


 * The second was Poseidon who fathered Percy Jackson with Sally Jackson. He tells Zeus that it was his wrongdoing so when Percy returns Zeus his master bolt in The Lightning Thief (Zeus forgives Percy later).


 * Hades had sired Bianca and Nico di Angelo earlier, before World War II but his mortal love, Maria di Angelo, was killed in a hotel disaster by Zeus. Mad that Zeus had killed Maria, Hades put a curse on the Oracle of Delphi that restrained younger maidens from getting the position and letting the Oracle grow old (the curse broke after the Battle of Manhattan when Hades stopped his grudges against his brothers and helped them defeat Kronos, their Titan father, the second and last time; that the oracle got another mortal girl to carry it on (Rachel Elizabeth Dare).

Reasons why the Pact was made
There are many reasons why the Big Three Pact was made by Zeus, Poseidon, and Hades after World War II:
 * They wanted no more disasters or wars caused by their demigod offspring.
 * They didn't want any demigod offspring that would try to overpower themselves.
 * The oracle prophesied that a child of the Big Three gods would decide the fate of the Gods, possibly for the worse.