Digimon: Who Are The Seven Great Demon Lords?

thegamer.com:

For as long as the Digital World has existed, there have been those seeking to take control of it. Due to its volatile nature, many have attempted to seize control to shape the Digital World to fit their desires. From the Dark Masters to the Digimon Emperor, there seems to be no shortage of villains for the various iterations of digidestined to go up against. However, there's one group that stands out.

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There are very few groups of evil Digimon that appear with as much of a frequency as the Seven Great Demon Lords. While these Digimon are rarely seen together, there is some sort of presence from the group in nearly every depiction of the Digital World. In some cases, one of their members serves as the main antagonist for the digidestined. However, despite their many appearances, many still wonder who exactly these Demon Lords are.

The term "Demon Lord" is a title given to a set of demonic Digimon that possess immense power and whose name carries weight within the Dark Area. There are several Digimon that have obtained the title of "Demon Lord", such as MaloMyotismon, but there have only been seven to gain the honor of being referred to as a Great Demon Lord.

Those that hold this title are unique among other Digimon as they can subvert the lifecycle of the average Digimon. While most Digimon go through rebirth when they die, should they fall to the hand of one of these Demon Lords, their data doesn't return to the world. Instead, their entire code is absorbed into the Demon Lord's very being, not only making them stronger but erasing their victim completely.

It's said that each of the Seven Great Demon Lords were once angelic Digimon. Not only that, but they held significant