Dark Planet

Dark Planet (暗黒惑星, Ankoku Wakusei or 黒い星, Kuroi hoshi) is the planet that is Dr. Raichi's base of operation. The planet was first introduced in the video game Dragon Ball Z Gaiden: Saiyajin Zetsumetsu Keikaku.

Overview
Dr. Raichi's pod docked on the Dark Planet after he escaped Planet Plant. The planet is the location of Dr. Raichi's fortress, as well as the place of many events in the OVA Dragon Ball Z: Plan to Eradicate the Saiyans.

The Dark Planet is surrounded by giant gas clouds that shoot out purple lightning. These lightnings nearly destroyed the Z Fighters' Capsule Corporation spaceship when they approached the planet.

Goku, Gohan, Piccolo, Future Trunks, and Vegeta then travel to Raichi's fortress on the planet and defeat Ghost Raichi and his supercomputer Hatchiyack.

Notable Residents

 * Dr. Raichi
 * Hatchiyack
 * God Guardon

Video Games
The Dark Planet was introduced in Dragon Ball Z Gaiden: Saiyajin Zetsumetsu Keikaku. The Z Fighters must defeat four God Guardons in order to open the door to Dr. Raichi's room. Enemies encountered here are Jiku, Bude, Mirage Turles, Phantom Turles, Mind Slug, Mental Slug, Psycho Frieza, Cooler, and Soul Cooler.

It is where Goku faces the final boss Hatchiyack in Dragon Ball Z Gaiden: Shin Saiyajin Zetsumetsu Keikaku - Uchū-Hen.

The Dark Planet is a battle stage in Dragon Ball: Raging Blast 2 and Dragon Ball Z: Ultimate Tenkaichi.

Trivia

 * In Raging Blast 2, the design of the battle stage version of the Dark Planet is nothing like the actual design in the movie. Frieza's spaceship can be seen in the background, possibly a reference to the original Famicom game.