Four Sovereigns
The four Holy Beast Digimon that have protected the Digital World and governed its stability since the age of myth. Each rules a compass point with strength said to rival the gods, each commands three of the twelve Deva, and all of them answer to the golden emperor enshrined in the Center.
The Center
the emperor ruling the land from the middle
The Four Holy Beasts
guardians of the compass points, each with three Deva under its command
Mega
Azulongmon
☯ East
Protector of the East and wielder of lightning; also counted among the Four Great Dragons.
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Mega
Zhuqiaomon
☯ South
Protector of the South and wielder of flame; the wildest of its kin.
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Mega
Baihumon
☯ West
Protector of the West bearing the attribute of steel; the youngest yet most powerful.
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Mega
Ebonwumon
☯ North
Protector of the North and wielder of phantasmagorical water; the oldest and gentlest.
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Lore notes
the stories behind the compassThe Emperor Sealed by an Angel
Fanglongmon's official profile says it was sealed in the deepest, darkest part of the land by an Angel Digimon that descended in ancient times; the lore points to Lucemon. Without their ruler, the four struggled for hegemony until settling into today's equilibrium.
Twelve DigiCores Each
Every Sovereign has four shining eyes and twelve DigiCores floating around its body. An ordinary Digimon holds a single DigiCore inside its body, exposed only in Undead types or the greatest of the Mega class.
Sealed by the Dark Masters
In Adventure 02, the Dark Masters had sealed the Four Holy Beasts. Freeing Azulongmon took the Holy Stones, the D-3s, and the older Chosen giving up the power of their Crests to break the seal.
Kyoto's Guardians
Adventure 02 mirrors the myth in the human world: a Kyoto professor explains that the Four Holy Beasts guard the city's cardinal points against evil spirits, in the place where the barrier between the two worlds is at its weakest.
More Than a Mega
All four have reigned since the era of myth, with strength said to rival the gods. Zhuqiaomon's profile warns that the power of a mere Mega will not suffice to defeat it.
Images and names link to DigimonWiki/Fandom (CC BY-SA unless noted otherwise). DigimonWiki hosts Fanglongmon under its Japanese name, Huanglongmon; in Japanese materials the four are Qinglongmon, Zhuqiaomon, Baihumon and Xuanwumon. The dub also calls the group the Digimon Sovereigns.