- You may be looking for Illumina's light side, Lumina.
Illumina is a powerful entity who rules over the mystical Maginary World, the birthplace of all dreams. Despite her great power, however, Illumina began to lose faith in herself, which resulted in her splitting into two beings representing the different sides of her nature: the benevolent Lumina and the villainous Void. Void set out to dominate Maginaryworld, shattering the Master Precioustone in order to use the power of its fragments. Fortunately, he was thwarted with Lumina called upon Sonic the Hedgehog and his allies for help. The Precioustone was soon restored, and Illumina returned as Lumina and Void were reunited. (StH: #92, CSE)