Blaze is the royal Princess (is sometimes referred to as "Queen") of an alternate dimension where she served as the guardian of the Sol Emeralds. She was born with the power of flames or pyrokinesis, which she formally addressed as a 'curse'.
When she was appointed as the guardian of the Sol Emeralds, this duty cause her to isolate herself
from the companionship of others and she ended up living a very isolated life as she followed her duty. Without accepting any real friends, she came to believe that she never had to rely on anyone else by pushing them aside,
which led to her often "carrying the weight of the world on her own shoulders". Because of this she never came to understand the Sol Emeralds' true power. Her arch-nemesis in her world was Eggman Nega.
Fanon History Edit
Credits: Sonic Wikia.