A 1984-style dystopia run by the Chaos Council, where Rem grew up.
Where Rem lives now, hiding in the shadows.
An altered version of the base Sonic world.
A two-tailed Mobian cat with chaos-emerald power who ran away from Sonic Prime's New York City and hides in the Boscage Maze.
Rainbow-colored, covered in wavy lines each a different rainbow color. Looks very Sonic-y. Made from Shadow's DNA.
Age 12. From the Sonic universe. Her home planet collapsed; she left at one day old and traveled through space before reaching Earth.
Age 8. Blonde hair, pale skin. Superhero costume: a black ninja suit with an all-over face mask; tiger stripes visible in the light.