The Following Storylines are dubiously canon to the rest of the universe in this interactive
The Afterlife in this world is split into two realms, the Heavens and the Hells. Both realms are allied to one another, and ran by incredibly powerful spirits who take a variety of forms but all dwarf the Macros of Growthspurt, making them look the size of humans compared to a full grown macro.
The Hells are the less populated of the two realms, their being much stricter requirements to end up down there then in say, Hazbin Hotel's universe. One has to be a pretty terrible person to go to the hells. Macros who enjoyed torturing humans in life tend to be the main occupants. "Demons" spend there days punishing the residents of the hells. (There is literally no difference between Angels and Demons. These are simply titles for jobs these demons fill.)
The Hells are currently ruled by the Cerberus Triplets, a trio of demons that take the form of massive canines and have the ability to fuse into one, massive demonic being. Nyx, the Magician, Eris, the Rebel, and Nemesis, the Judge, overthrew the previous monarch of hell, their mother Lillith. (Lillith took this as a sign that it might be time for her to retire, she was getting too old to be mean enough to damned souls anyway.)
The Heavens are far, far more populated than Hell. They have no official leader at the moment, ran instead by a Board of Directors. This board puts all their time and energy in rewarding the good souls of macros and humans who have passed on with afterlives of peace and pleasure...
There are 7 levels to the heavens, which seems to take the form of an endless resort hotel to those who arrive. The most populated by far is the first, second and third floors, all of which cater to those who did nothing in life to deserve punishment, but also little to nothing in life to deserve much in the face of rewards. The first, or "Limbo" floor, being the home of the most "neutral" people is far from unpleasant, its just...kinda boring. As you go higher up it becomes more pleasurable. The 3rd Floor is essentially the same levels of luxury as a 4 star hotel and holds the souls of most children who die as...the judges of the afterlife tend to be more lenient to those who didn't live long enough to get a real shot at being good or evil.
For those who wish to move beyond the floor they were assigned, doing work as an "Angelic Representative", usually in the form of doing simple maintenance tasks or other work for the Board, can earn them places in higher floors. Angels themselves do work on all floors but the vast majority live on the upper echelon of floors 4-7.