the Planet
Grannest is a planet in the same solar system as Mekks, Jeljel, and Layazero. It's an industrial planet that has been carved over time to look like an apple core.
Grannest is entirely made up of cities and factories; no organic life exists on it except for anyone who chooses to visit. The atmosphere is heavily polluted with chemicals which are toxic to almost all life; not even the Grannestians are safe, as these chemicals can build up and corrode their bodies.
Grannestians
Grannestians are roomba-like robots which vary in size and model, though they all follow the same design of "cute cylinder with an eye and legs".
They are not the original inhabitants of Grannest; the natives left the planet long before the Meteos wars, and their current fate or identity is unknown. The majority of Grannestians believe that, one day, their creators will come back.
Grannestians do not need to eat, but do need to charge, which they do by staying at docking stations. Certain models can also consume specific cartridges produced only on Grannest; these are flavored like food or drinks for organic life, though they taste much worse if consumed by said organic life.