Alternative Scenarios for Hell and Heaven

Heaven and Hell, as part of the Hazbin Hotel and Helluva Boss series by VivziePop, exist as scientifically explained ecosystems in this scenario. Hell: The realm of Hell in this ecosystem is an extremely massive network of caverns beneath the Earth's surface, with extensive tunnels leading to and fro. Its complexity and size are so vast that human explorers, in general, have yet to discover its full extent. Within this bleak and shadowed environment dwell a selection of organisms, evolved especially to survive here. The imps, for instance, have evolved to handle low light conditions, with bioluminescent skin helping them navigate through the labyrinth-like caverns of Hell. Similarly, hellhounds evolved with an acute sense of hearing and an extrasensory perception, allowing them to track their prey in the darkness. Sinners, another denizen of these caves, are essentially humans who became adapted to the harsh conditions. Over the years, they developed enhanced muscular strength and a bipedal way of navigating the cave system, which helped in hunting and gathering resources. Carnivorous plants and fungi, as well as many other cave-dwelling organisms, have developed a symbiotic relationship with these larger organisms, offering protection and nutrients in return for propagation and feeding needs. Heaven: The ecosystem of Heaven, on the other hand, exists on substantial, unreachable cliffs and mountains, well above the clouds where the atmospheric conditions are very different from the ground level. The organisms here have evolved to survive in low-oxygen environments, with some capable of photosynthesis, akin to high-altitude plants on Earth. The angel species are specially adapted to a life spent primarily in the air, with wings enabling them to sail across the landscape and navigate the rocky crags with ease. They possess a keen sense of vision, able to spot even the smallest of movements or changes in their environment. They also have powerful lungs to cope with the thin air at such altitudes. Other Heaven-dwelling creatures evolved to be nimble climbers or strong flyers, suited to the precarious and vertical terrain. The flora is hardy, capable of withstanding strong winds, and the cold, taking root in the smallest crevices or clinging onto the sheer cliff faces. In this scientific, non-supernatural scenario, the Hell and Heaven ecosystems have developed based on their unique conditions, leading to organisms perfectly suited to their environment. Instead of existing due to mystical reasons, these two realms are simply products of the Earth's diverse environments and the result of millions of years of evolution.