Remie x 3 is the main planet of the Remies, situated in the Remian System. It is almost completely ocean, with only a few islands, although they tend to be around a thousand miles long.
Its massive size makes it reasonably unstable, show via the numerous volcanoes and geysers on the surface. Normally, a planet would not be able to support itself with that much mass, and it would collapse into a black hole. Remie x 3 has not done so because of the large deposit of the anti-gravity element Remenium, which is almost only exclusively found on this world.
The planet is the second oldest in the Remian System (beaten by Remie x 4), and only formed 70 million years after the Creation. This means that it is a highly developed place, perfect for the Remies needs. There is not much life on Remie x 3, except for various species of whale and fish, and a few grazing mega fauna.
Remus Minor and Remus Major are its two moons, which are both around a fifth of the size of the planet. The later moon is connected to Remie x 3 via the Remus Tower, built to stabilise its orbit.
It is unique in the Universe because it and the entire Remian System orbit the Universe, and not a star. The orbital period is so long that the planet is practically tidally locked to the rest of the galaxies, being just over 12 trillion years.