|Primary Residents||Every species in the universe|
|Former Residents||Deceased beings|
The Galactic Universe is the Universe that the BIONICLE storyline takes place within. The Galactic Universe contains celestial objects such as stars, planets, and moons, along with asteroids, galaxies, and nebulae.
The Galactic Universe contains the Solis Magna System, home to the star of Solis Magna and the planet Spherus Magna, the only known habitable planet in the system. Around 100,000 years ago, Spherus Magna was split into three pieces as the result of a cataclysmic event known as the Shattering. These three pieces were referred to as Bara Magna, Aqua Magna, and Bota Magna.
The Great Spirit Mata Nui, who inhabited the giant robot, departed from Spherus Magna before it was split from the Shattering. He began a long journey through various planets, observing them, and occasionally landing on them to witness their societies. While returning from his journey, the Brotherhood of Makuta, an organization created to maintain order inside him, rebelled against him, and their leader, Makuta Teridax, released a virus which rendered him comatose after three hundred years. This in turn caused his body to shut down, and it was drawn into the gravity of Aqua Magna where it crashed on the ocean surface.
When Teridax took over the robot and the Matoran Universe inside of it, he sealed Mata Nui's spirit inside the Kanohi Ignika and hurled it out of the mechanical body and into the Galactic Universe. It flew through space, until the gravity of other celestial bodies eventually forced it to land on Bara Magna. By using the Red Star, Teridax later departed Aqua Magna for Bara Magna with the intention to destroy Mata Nui once and for all and begin a conquest of the Galactic Universe after. While in transit to Bara Magna, he teleported Helryx, Lewa, Artakha, Axonn, Brutaka, Miserix, Tuyet, Hafu, and Kapura outside of his body and into the void of space; however, all of them were soon rescued by Vezon who took them to Bota Magna to greet an imprisoned Great Being.
When Makuta Teridax arrived on Bara Magna, he began to fight Mata Nui, who inhabited the body of an ancient robot. During the battle, Mata Nui managed to redirect a blast of Gravity from Teridax at the two moons of Bara Magna, drawing them into the gravitational field of the planet; the two moons then fell towards Bara Magna. A few fragments fell off of the two moons during their entry. One of these fragments hit the back of Teridax's head, killing him. The two moons and their fragments eventually struck Bara Magna, reforming it into Spherus Magna. Mata Nui then used the last of the powers of the ancient robot to restore the planet of Spherus Magna, filling it with life.
| Solis Magna System: Spherus Magna (Aqua Magna • Bara Magna • Bota Magna) • Solis Magna|
Others: Matoran Universe • Red Star • Spirit Stars