Nightmare's Fortress

Nightmare's Fortress is a planet-sized space station located in the reaches of the galaxy. It is home to the evil Nightmare and his company, Nightmare Enterprises. It is according to what Sword Knight says in the third of the final five episodes that the fortress is where all of Nightmare's monsters and other inventions are born. The fortress' first appearance was also in said episode.

The fortress is surrounded by many Destrayers, all of which protect the fortress inside and out. Its exterior has what appear to be many futuristic cities, as well as many gun turrets and many trenches. It also has a huge red eyeball on its front that looks strikingly like Zero, and is also computer graphic animated on its exterior. The entrance to its interior and the tunnel leading further into the interior itself is also CG-animated as well.

The interior is also very futuristic in appearance, also complete with many trenches. There are many elevators and monorail-like trolleys running along monorail tracks and those that are elevator-like. At the heart of the fortress' interior lies the command center, where the members of Nightmare Enterprises control the fortress. The command center is also where they, most specifically the NME Salesman, deliver monsters and other items to their customers from. The fortress has many locations besides the command center, among them the Monster Training School and Nightmare's chess board-like lair.

The fortress was finally destroyed at the end when Kirby's crew planted a time bomb on the monster transmitter within the command center, which detonated not long after all of the crew escaped together, which blew up the whole fortress from the inside. As the fortress exploded, the viewer could also hear the salesman screaming, signifying that he was killed in the blast. Because of the fortress' destruction, Nightmare Enterprises was destroyed, meaning that King Dedede had no way to buy himself any more monsters.

Trivia

 * As said before, the eyeball on the front of the fortress' exterior looks strikingly like Zero.
 * When the Halberd is flying along the trenches of the fortress' exterior, it is a reference to Star Wars.
 * Nightmare's Fortress is also sometimes mistakenly called the Destrayer.