Bloom is the protagonist that goes through the most prominent hero's journey and character arc, going from California native and unlikely fairy to finding out she's actually a powerful changeling. Born a fairy and swapped at birth with a human baby, Bloom finds out her parents are actually not her birth parents, and that her story is far more complicated than at first glance. At first, her insecurities and roller coaster of emotions prevent her from being able to control her magic, but she soon finds the power within her to harness her fire-wielding abilities and use them to her advantage.
Bloom goes from starting an accidental fire in her California home due to her immense anger to controlling it thoroughly enough to killing the Burned Ones all at once in the final episode. To get there, she is pushed along by her friends, and by Rosalind, the ex-headmistress who was trapped by Dowling. Rosalind helps Bloom tap into old world magic that was thought to be lost, and is extremely powerful. That being said, Bloom rejects depending fully on Rosalind. Apart from finding herself, Bloom also establishes a flirtatious relationship with Sky, that becomes more intense when he breaks up with Stella once and for all. By the end, Bloom makes a trip back to California to tell her parents the truth about her origins, stronger and more sure than ever of her abilities.