Omninesia contrasts the green, life-giving plants against the red, destructive volcano.
Tucma contrasts the harsh, polluted surface with the beautiful underground crystal caverns.
Cipanku contrasts the high-tech city of Neoedo against the traditional, religious countryside.
Finally, Arbury contrasts the working-class with Melee-types (brawn) against the upper-class with Mental-types (brains).
The Galios questline reveals that the Pan-Sun is analogous to a planet's core. It's molten but has solid outer layers, and it's responsible for the movement of the landmasses.
Mimit has a feline appearance, and can transform into a replica of another Temtem on the battlefield. In other words, it's a copy cat.