Seven Great Demon Lords

The Seven Great Demon Lords (七大魔王 Nanadaimaou) are a group of Demon Lord type Digimon who each represent one of the Seven Deadly Sins and are based on seven demons from Judeo-Christian mythology, a reference to 's, as well as elements and references to the epic poem Paradise Lost  by John Milton, The Lesser Key of Solomon (Clavicula Salomonis Regis), a well known book in demonology, amongst other material.

Although the members of this group have appeared individually as antagonists throughout various series, there have been few occasions where a pivotal story plot has involved the entire group as a whole. For example, they are mentioned in Digimon Savers and have been prominently portrayed together in later Digimon TCG media. They have been the main antagonists in Digimon Savers: Another Mission and Digimon Story. They are also referred to in a storyline promoting the Digimon Twin, whereby they secretly release a crack program (Tempest), causing rampage as a consequence into the Digital World that affect the Four Holy Beasts, among other Digimon.

Crests
Each of the Seven Great Demon Lords has their own crest displayed in one of the seven colors of the visible spectrum of light.

The center of each crest depicts one of the seals of the Seven Olympian Spirits (also Olympick; Olympic Spirits), a group of seven mythological entities who, under God, ruled over the 196 provinces of Heaven and presided over the natural world for 490 years each. They are mentioned in works such as Arbatel de magia veterum and are each associated with a celestial body, which is also displayed on the crest directly above the Olympian Spirit seal, and corresponds to a particular sin.

Within the space between the two concentric circles is text stating a designated Level; this is "666" for all the crests where "666" is the "Number of the Beast", a concept mentioned in the Book of Revelation, System; the demon that traditionally represents the respective sin, and Code which identifies a sin associated with the aforementioned demon. At the bottom of the inner circle is text which specifies a caution for a Purgatory Level ranging between 1 and 7.

The structure of the text is in the following format:


 * LEVEL:___ SYSTEM:___ CODE:___ (repeated twice)
 * CAUTION! PURGATORY LEVEL ___

In Digimon Savers: Another Mission, the crests are displayed on card keys in the following format:

Having the appearance of the dragon of Revelation, it is Lucemon's final form. As was told in the Revelation, it carries the Crowns of the Seven Deadly Sins upon its head, and it holds the globe of darkness, "Gehenna", which absorbs all attacks. Before the all attacks are nullified, and it is said that the world will perish when Lucemon takes this form. However, Lucemon's true form (Lucemon Larva) exists within the, and Satan Mode is no more than Lucemon's reflection. Therefore, no matter how many times Satan Mode is attacked, those attacks will not reach the true form, Lucemon Larva. Its Special Moves are a flame of destruction which purifies everything (Purgatory ), and a light of annihilation fired from the seven Crowns.

Ogudomon is a grotesque Super Demon Lord who has seven legs and eyes, as well as an eighth eye. As it includes the whole of the Digital World's sins, and is a mysterious personification with the ability to atone for them all, the power of a Digimon with even a small amount of malice is counterbalanced, and it is impossible for it to defeat Ogudomon. Its Special Moves are running wild while lustful, and a shock-wave which is played from its oral-area. Also, it pulverizes its opponent with its enormous legs.

Like Lucemon: Satan Mode, it carries the Crowns of the Seven Deadly Sins upon its head.

Gate of Deadly Sins
Although very little is known about it, the seven crests are also engraved on the Gate of Deadly Sins.

Belphemon, along with the other great demon lords, almost brought ruin to the Digital World long time ago. However, he was sealed deep inside an ancient ruin in the Digital World. Professor Akihiro Kurata found his Digitama and brought it to the real world at some point of time. He nurtured the Digitama that eventually hatched into Belphemon Sleep Mode. Kurata's plan was to use Belphemon as his ultimate weapon for both Digital World and Human World domination.

The group is mentioned by Ulforce V-dramon as a powerful Demon Lord class Digimon. In his story, Ulforce V-dramon explains that the Royal Knights confused Homeostasis prophecy of the "Red and Blue Dragon" that will destroy the world with Leviamon and Belphemon. Ulfoce V-dramon also mentioned that the rest of the Demon Lords, except for Lilithmon, didn't wanted to get involved in the war and mantain a neutral position.

Members
The Seven Great Demon Lords are listed here in order of ascending Purgatory Level. This ordering is a reference to "the levels/terraces of purgatory" mentioned in the epic poem,  by. In the poem, each level represented a different one of the seven deadly sins and presented ways to atone for each sin. As a person progressed, they would eventually make it to the top of the "Mountain of Purgatory", reaching.

The structure of the "Mountain of Purgatory" analogous to the Seven Great Demon Lords' Purgatory Levels is the following: