"The Melding" Parallel Universe is a parallel universe where The Shattering on Spherus Magna was prevented by an event called The Melding, and Mata Nui was never created.
History
Beyond 100,000 years ago, Energized Protodermis began forcing itself up to the surface of Spherus Magna. As the inhabitants of Spherus Magna discovered its powers, they were unaware the sentient substance was spreading across the planet, threatening to break up the planet. The Great Beings, however, did notice, and thought of several ideas, including the creation of Mata Nui, yet instead settled upon creating the Toa and Matoran species.
These two species served different purposes. Toa were sent underground with specialized containers to collect Energized Protodermis. Unlike in the main universe, Toa were smaller and agile to assist with problems like cave-ins, whereas Matoran were larger to accomplish daily requirements of the villages they inhabited. Five years after their creation, these Toa collected the Energized Protodermis and fused their planet back together in the event known as The Melding.