Pagan League

The Pagan League is an alliance of gods and heroes from different mythologies brought together to defeat the Apotheosis Initiative. The founding members of this alliance were: Camp Half-Blood and the Greek gods, Camp Jupiter and the Roman gods, the House of Life and the Egyptian gods, Hotel Valhalla and the Norse gods.

Other groups that enlisted were the Hindu gods and their demigods, including the Pandava; the Celtic gods and Camp Dunscaith; the Knights of the Round Table; the Shinto deities and their heroes

Background
The Pagan League was only made

Second Giant War
After the first Demigod Civil War, the Greek and Roman demigods were separated from each other by the mist. This division lasted until the Second Giant War when Camp Half-Blood and Jupiter reunited and helped to defeat the Giant Army and save Olympus.

This alliance between the Greeks and Romans was the first link in what would later become the Pagan League.

Setne's War
This conflict was brought on by the magician Setne's experiments with combining Greek and Egyptian magic in an attempt to become a God. These experiments got the attention of the Kane Family as well as a few demigods from Camp Half-Blood: namely Percy and Annabeth.

This "Little taskforce" worked defeated Setne and decided to remain in touch afterwards while each group agreed to keep the existence of the other set of gods a secret. This was the second link in the chain.