FANTASIUM
Fantasium is, of course, the name of the world this all takes place in. While not necessarily a continent, it is a large, island-like area amidst a more-or-less empty sea- it is said that one who ventures out into the sea never returns.
Fantasium is made up of four areas, known as its 'Districts'. Each one of these districts is different, in most any way possible- inhabitants (known as Fantasms), environment, any structure the inhabitants have- every way. No two Districts are the same.
Each of the four Districts converge into a central point, known as the 'Heart of Fantasium'. Nobody has ever been there, so nobody knows what it looks like.
The Four Districts
As noted, Fantasium is split up into four Districts, with the still-unknown Heart in the middle of them. One district takes up each of the four cardinal directions- North, South, East and West. Each one of the four Districts has a Keeper, a Fantasm that keeps the area safe, secure, and stable.
The Treebound Sanctum is the northernmost district of Fantasium, whose Keeper is Buttercup. The area is split into its forest section toward the southernmost points and a harsh mountainous area toward the northenmost points- This area was at first not recognised as part of Fantasium, but now it is. Its major community is quite insular- though they prefer peace over violence, they do not always take well to outsiders.
Moonview City is the southernmost district of Fantasium, whose Keeper is Tourmaline. A busy cityscape drenched eternally in night, governed almost entirely by order and routine. It borders the ocean at its very southermnost point, including a small island manor off the main shore.
The Blackstone Bastion is the easternmost district of Fantasium, whose Keeper is Vanilla. An isolated place under grey skies, an air of melancholy surrounds this place. Its Keeper is seldom heard from.
The Darkshine Carnival is the westernmost district of Fantasium, whose Keeper is Scribe. Seemingly an amusement park on the surface, The Carnival itself is simply a collection of pocket-worlds, led to by trains. Its Keeper's main job is to keep them stable.
The Alternate Worlds
After the events of the Red Sun Incident, the gateways to at least two alternate worlds have opened- these being Pathopeir and Neo-Fantasium. Little is known about either, as no Fantasm dares to venture beyond the gate. However, one thing is certain- there are more than just the Fantasms out there! While neither is a district and therefore does not have any Keepers, Neo-Fantasium does have one- the self-appointed Shard.
Realms beyond Fantasium?
It's unclear if there are any realms beyond Fantasium. However, there may always be some out there- perhaps the sea is not as empty as the Fantasms think.