Hexaquarta

Overview
The Hexaquarta (Hex - a - quar - ta) is a group composed of Black Crown's first six villains, after they had been revived by the Band of Dreams. They play the main villains in Book 10, seeking to elimiante both the Underworld and Earth in order to restart and build a new society.

History
After being revived by the Band of Dreams, Afeus uses his high-intelligence and psychic abilities to discover the other five people who had been revived alongside him, gathering them and discovering they share common goals.

With a plan devised, the six create the Hexaquarta and launch a precise attack on the Underworld, decimating half of it before being pushed back by Black Crown and the Seven Deadly Sins. Later, they split up and separate the forces of the Alliance, nearly pushing them to a defeat with armed forces.

Later, during a retreat, Zane is able to discover the locations of the six of them, and mages are sent out to fight them. Lagann is sent to combat Van; Mio is sent after Caloris; Jay is sent to find Afeus; Lance goes after Ivior; and Escalus is taken down by Kristina and Ruben.

Though Caloris is defeated by Mio, the three God-Slayers manage to claim victory against their opponents and move away from the battle, until they're confronted by Zane, who combats all three of them at once with his Zodiac Breaker, and his Sacred Paths of Destiny Mode, eventually defeating them after they merge into one entity.

With their army defeated, and having been brought down — it was later discovered that Divinos had personally defeated Hylax — they're forced back into the Band of Dreams, which is then destroyed by Umbra.