Legion

Legion is the governing body of the world in Mega Man ZX Advent. There are three leaders known as the Sage Trinity: Master Thomas, Master Mikhail, and Master Albert.

Albert is the main antagonist in the game. Using his position, Albert gave his DNA to "Chosen Ones", making them able to Megamerge. When Ashe/Grey discovered Albert was behind the Game of Destiny and Biometal Model W, he leaves Legion's headquarters and goes into hiding to proceed with his plans.

The government created the global law that bring equality between humans and Reploids, giving humans mechanical parts and Reploids lifespans. The original human parts and Reploid data are stored by Legion. In the secret ending from Mega Man ZX Advent, Master Thomas shows to plan using the stored parts and data for unknown reasons.

Boss: Siarnaq (Model P)

Trivia

-The Legion HQ is remarkably similar to Neo Arcadia in terms of architecture.