Four Guardians

The Four Guardians, known as the Four Heavenly Kings (四天王) in Japan, also known as the "Big Four", is a group from the Mega Man Zero series consisting of Sage Harpuia, Fairy Leviathan, Fighting Fefnir, and Hidden Phantom. They are the military commanders of Neo Arcadia, and they rule the city in a council alongside the Eight Gentle Judges and Copy X. The Four Guardians were created from the DNA of the original Mega Man X. Each of them wields one of the Ten Shining Weapons and has an Armed Phenomenon form. They were gathered from various areas to counter the Resistance efforts.