The Stairway

The Stairway, or the Stairway between Dimensions, was a flight of stairs with bricked walls and small platforms in front of twelve doors; these were the doors to the various Dimensions, known collectively as The Twelve Dimensions.

Sometime after the death of Susan Wise, it was discovered by Daniel Benfield and Allura McCoy that there were far more Dimensions – 25, in fact. While Dimension #24 was Daniel's home (long since decimated), #25 was Lavos' home Dimension, containing his empire and base of operations – and it was here that Mew took the fight when Miss Glowbug was sidelined.

Shortly afterward, as a result of the battle, another 25 Dimensions appeared on the Stairway, directly opposite of the others. These contained some parallels, with #26 being the home of Samuel Dleifneb; however, as his family already assumed his death and moved on, he gathered his remnants and moved to #2.

Dimension #50, on the other hand, had been dead and decimated for many years before Daniel and Allura found it.

Known Dimensions

 * #1: The universe of Pokémon, used in the pre-Twelve Dimensions stories
 * #2: The universe of Arus, later Allura's house
 * #3: Seemingly no more than a single town, containing a bar, general store, and Mayor's Office (home of Susan Wise)
 * #24: Daniel's home universe, long since decimated
 * #25: Lavos' empire and stronghold
 * #26: Sam's home universe
 * #48: A parallel to Allura's, still intact
 * #49: Seemingly the world of Digimon
 * #50: A dead, decimated world; the few remaining records indicate that Lavos destroyed it, and the Dimension had been populated by creatures known as "Shapes"