Four Great Dragons

The Four Great Dragons (四大竜) are a group of four Mega-level Dragon Digimon.

Azulongmon is the most deified existence in the group. It is said that Slayerdramon's form is one that can only be attained by those who complete the training that is called the "Trial of the Four Great Dragons" (四大竜の試練), which can only be challenged by Dragon Digimon.