Alexa Charron is the sixteen year old dhampir daughter of vampire Lucien Charron and the sorceress Gwendolyn, the niece of Caliban, friend and possible love interest of Trey Laporte and one of the main characters in the Changeling/Wereling books.
She like her mother is also a sorceress and lives with her father, his friend Tom and werewolf Trey in a luxury apartment in London and battles her uncle Caliban and his forces.
Alexa was born to Lucien and Gwendolyn sixteen years before the events of the first Changling book. Prior to Alexa's birth, Gwendolyn had began dabbling in dark magic, but stopped when Alexa was born.
Sometime after Alexa's birth, Gwendolyn became interested in dark magic again. One day, she attempted to use Alexa as a sacrifice in order to raise a demon, but Lucien arrived in time to stop this. Gwendolyn left afterwards and Lucien told Alexa that her mother had died.