Data Ravelさんのイラストまとめ

There is also the Dark Whirlpool, said to be the "origin of the power of darkness" thet Kaiser entered there to find Devimon's Dark Data. When he did that Kaiser started going crazy with a voice that wanted to make him fall into the World of Darkness (闇の世界, Yami no Sekai).

In 02 Ken used the power of the Dark Digivice and the Dark Towers to expand the power of darkness in the DW. After episode 13 it was decided to establish that Ken went to the Dark Ocean where the Dark Digivice was created and the Dark Towers were originally from the same place.

For the episode 13 of Digimon Adventure 02, Chiaki J. Konaka introduced a new place called "Dark Ocean" (闇の海 or 暗黒の海) which is ruled by the Elder God (古き神) Dagomon worshiped by the Deep Ones (深きものども) Hangyomon.

Etemon then ends up in the "Darkness" (暗黒, Ankoku), also called "World of Darkness" (暗黒の世界, Ankoku no Sekai), "Underworld" or even "Dark World of Hell" (地獄の暗黒の世界, Jigoku no Ankoku no Sekai).

Digimon at the Perfect Level have a power beyond understanding that some Digimon are able to evolve into even after they reached their Maturity (Adult Level)

I'll be doing a new thread about the Dark Area and "World of Darkness". This will help with the thread about the Four Holy Beasts

Also, every time that I write about these things, I can only think about the possibilities of what we might see in Digimon Survive or Adventure:

And of course, it is quite clear that this will also be worked on in Digimon Adventure: and in Digimon Survive, and of course we will most likely see the same rules being applied, even if for different purposes.

So, Demon is a Digimon with the power of the "Dark Virus", capable of altering the nature of the 0s and 1s of the Digital World, which allows, for example, to transform even the Data Digimon that are recognized as good, into violent and evil viruses like Demon itself.

In Digimon Adventure, the nature of darkness is made clear as having its origin in negative feelings such as loneliness, sadness, fear and anger. Furthermore, this power is also referred to as the nothingness, which erases everything it touches.

This is not the first time that it is said that Digimon souls can go to Heaven, Bagramon's profile already said that he could send them to the body of another Digimon, to Hell or to Heaven.