Demon Realm

The Demon Realm (魔界, Makai), also called Demon World, is located at the very tip of the universe in the Dragon Ball series. It is described as a physical plane opposite of the known universe.

Overview
The Demon Realm is home to most of the Demon race, who are led by a Makaioshin, the evil equivalent of a Kaioshin. Not much is said about the realm in the Dragon Ball manga, other than the fact that it was once ruled by Dabura (who is presumably a Makaioshin, but this is never confirmed as the term "Makaioshin" was revealed in the Super Perfect Guide, which was released years after the end of Dragon Ball Z).

In Dragon Ball, Shula, another King of the Demon World, managed to open a giant entrance to the Demon Realm on Earth and kept it open for a while by wedging his cursed sword in its door. Goku managed to save Princess Misa, who had been kidnapped and taken to the Demon Realm by Shula. Then, Goku pulled out Shula's sword and closed off the entrance to Demon World.

In Dragon Ball Z, when Babidi asks Dabura if he has any preferences on which planet he wants to fight Dabura responds "Perhaps a planet similar to this one. I don't want unfair advantages." The area they are transported is called Demon World in the video game Dragon Ball Z: Buu's Fury.

Known residents

 * Dabura – Originally King, but taken away after falling into Babidi's spell. He is killed by Majin Buu in Age 774.
 * Shula – Referred to as King during his appearance in Dragon Ball.
 * Melee – Shula's minion.
 * Gola – Shula's minion.
 * Miira – In Dragon Ball Online
 * Towa – In Dragon Ball Online

Trivia

 * In Japanese Buddhism, the realm of demons is called Makyo (lit. "Demon's Cave") like the planet of Garlic Jr.'s ancestors in the series.
 * Lucifer, Shula, Dabura are all said to be the King of the Demon Realm, which possibly means that they are Makaio or Makaioshin.
 * The area Dabura and the Z Fighters are transported looks strikingly similar to the planet where Babidi recruits Dabura seen in a flashback in "Eighteen Unmasks".