Complex sentence: Blaze comes from a world outside the main "Sonic the Hedgehog" series, where she is a princess and the guardian of the Sol Emeralds, a group of powerful elemental gemstones analogous to the series' integral Chaos Emeralds.
Split into simpler sentences: Blaze comes from a world outside the main "Sonic the Hedgehog" series. While there, she is a princess and the guardian of the Sol Emeralds, a group of powerful elemental gemstones analogous to the series' integral Chaos Emeralds.