Arus

Arus was a member of the Galaxy Alliance and homeworld of Allura McCoy and Michelle Lovitz. Its centerpiece was Castle Altair, likely built during the childhood of Allura's father Alfor. The castle was destroyed, along with various other portions of the planet, by Lavos in 1014.

During the years after Lavos' attack, while Arus was rebuilding, Allura and Shelley would routinely walk to the Hill of Srin to discuss various matters. It was here that Mew arrived in 2444, revealing that Arus and all Allura knew was but Dimension #2, it and eleven others being connected by a stairway.

Several years later, the planet and the rest of the Dimension were utterly decimated; with nothing left, Susan Wise offered to seal off the wasteland and simply turn the Dimension into an expandable house, to which Allura agreed after she, Mew, and Miss Glowbug salvaged what they could.