The races of the Sangteuk Universe are divided into four main categories:

1. The U-Bot Race A race of robots and ghosts.

2. The In-Gwa Race A race of humans and monsters.

3. The Sik-Saeng-A Race A race of plants and inanimate objects.

The names of each race are related to their characteristics:

U-Bot comes from Yu-bo (留保) (Meaning: To reserve, preserve, or postpone a decision, right, or matter rather than processing it immediately).

Specifically, ghosts who should have reincarnated, passed on, or vanished instead possess or inhabit robots to preserve their existence.

In-Gwa comes from In-gwa (因果) (Meaning: 'Cause' (In) and 'Effect' (Gwa)).

They are the 'cause' of all other races appearing, and the current human/monster forms are the 'effect' of being transformed by those other races.

Sik-Saeng-A comes from Sinsaeng-a (新生兒) (Meaning: Newborn baby).

They are the most recently born race, and most possess pure, child-like personalities.

Geography

To the northwest lies the land of the Sik-Saeng-A race.

To the southwest lies the land of the In-Gwa race.

To the southeast lies the land of the U-Bot race.

To the northeast lies the [REDACTED] land.

There are boundaries between the regions.

The Sik-Saeng-A land is bordered by a massive leaf-shaped boundary to the north and west.

The In-Gwa land is bordered by metal wall-like boundaries to the west and south.

The U-Bot land is bordered by a massive cloth through which electricity flows.

The [REDACTED] land is shrouded in mist.

Sik-Saeng-A

The Sik-Saeng-A race consists mostly of combinations of plants and various inanimate objects, or pure plant or inanimate entities living in their territory.

Most have pure, child-like personalities (though there are exceptions).

They are the most recently emerged race.

In-Gwa

The In-Gwa race consists of humanoid monsters, unusual humans, or intelligent monsters living in their territory.

Their personalities, appearances, and abilities are all unique and varied.

They are the root cause of all other races and are the ones who were ultimately transformed by the races they created.

U-Bot

The U-Bot race consists of ghosts who were meant to pass on, reincarnate, or vanish but instead possess machines, coexist with robots, or exist as standalone robots or powerful spirits/wraiths in their territory.

Personalities vary, but wraiths are generally malevolent. Almost all are extremely intelligent in terms of mechanics and programming (with some exceptions).

Most ghosts created robots or machines to avoid vanishing, thereby preserving themselves. However, as the ghosts faded, the machines gained independent egos, or the ghosts became wraiths consumed by the desire to avoid disappearing when their mechanical vessels were lost.