The first type is transitional forces.
These forces generally have strong clan power but are not predatory forces.
When encountering the Black Tide or other external crises, they can only abandon their hometown world and migrate.
After landing on Earth and initially detecting the environment, they find the Earth environment harsh and unsuitable for living, so they quickly leave.
The risk assessment of these forces is high, although they are not predatory forces.
There is also a probability of using Earth as a refueling station.
Fortunately, the frequency of these forces appearing is very low; since the creation of the Earth Alliance by the Moon Eclipse Clan, they have appeared only once.
The second type of force is stationary forces.
These forces can establish a space channel but have no resources to open another to leave after landing.
This type is further divided into forces that can ally and those that are predatory.
