Subspace (SSBB)

Tabuu and the Subspace Army
Tabuu, the embodiment of Subspace appears. He wants to cut the world our main characters live in to pieces and drag it into his world. He hides himself in Subspace, watching our world vigilantly.

Tabuu himself cannot leave Subspace. That’s why he has to prepare an army and a leader for the offensive into the other world.

Master Hand is the master of this world. Tabuu studied Master Hand and the fighters, and this knowledge leads him to use Master Hand for his plans here.

Chains of light bend Master Hand to the will of Tabuu, who uses Master Hand to enlist the likes of Ganondorf, Bowser, and Wario. He gives each of these minions a Dark Cannon and tells them to hunt down any talented fighters that might stand in the way of the Subspace Army.

Master Hand is now more a part of the Subspace world than he is a part of our own.

Ganondorf pretended to swear allegiance to Master Hand, all the while planning to usurp power from within. Bowser is relatively loyal to Master Hand, but he does not care for Ganondorf. Wario cares very little for the actual objective he was given and wants to continue just doing whatever he likes.

And of course, none of them know about Tabuu.

And how will this world be cut into pieces and dragged into Subspace?

Tabuu has had his eye on the advanced technology developed on the Isle of Ancients. This mysterious island hangs suspended in the sky and gives home to a group of robots. No one knows how long they have been there, but they have existed for ages without interfering with other civilizations.

Life on the Isle of Ancients revolved around a single leader, the Master Robot (also the Ancient Minister, as we later learn). The other robots gave their unwavering loyalty to the Master Robot and existed in peace.

But now Tabuu has taken the entire island hostage. The Master Robot wants to avoid losing so many of his brethren to Tabuu, so he reluctantly agrees to be the main front of the Subspace offensive, and begins development work on the Subspace Bombs.

The Master Robot decides to disguise himself as the Ancient Minister out of shame for his own decision to work with the Subspace Army. The Dark Cannons are also being developed and built on the Isle of Ancients.

The Great Maze
Tabuu had begun to reconstruct some of the pieces he tore out of our world into a nightmarish maze. The maze extends even farther than you realize.

The shadowy versions of fighters and the reincarnated bosses from earlier encounters were created based on detailed analysis carried out by the Subspace Army. They were placed here to guard the labyrinth.

Mr. Game & Watch and the Battleship Halberd
Tabuu takes notice of the peculiar qualities of Mr. Game & Watch’s body mass. He uses these particularities to create a nearly infinite number of shadow bugs, which he then uses to create the Subspace Army.

However, since Mr. Game & Watch does not have any concept of good and evil, he is unaware of the effects caused when he is used in this way.

Tabuu also has his eye on Meta Knight’s ship, the Halberd, as a means of transportation for the Subspace Army.

Using the Subspace Army, he launches a violent attack on Meta Knight and takes the ship for his own. During the attack, King Dedede engages Meta Knight, unknowingly making it impossible for Meta Knight to repel the Subspace Army’s attack.

Source
Smash Bros. DOJO!!]