The Cubes are massive robotic machines engineered by Theta. Their outer shell is made of Galactium—an impenetrable metal forged by compressing corrupt matter. Galactium not only blocks all Nexus energy from passing through, suppressing the abilities of Nexus energy users, but it also reflects Nexus energy back at its source. Additionally, this unique material enables the Cubes to stabilize and heal unstable planetary cores by reversing their energy release.
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