Galaxia is an golden-blue girl with a golden dress who is the protagonist throughout The Darcy Triplets Storiverse. She serves as Lorcan's mentor. She disguises as Mrs Jones, an english teacher who's being very supportive.
She reveals in Game Two Begins that she is the Princess of the Eighth Dimension who left to become Lorcan's mentor to guide him to his destiny.
She made her final appearance in Can You Feel It?, she congratulate Lorcan after he returns the Cube of Dimension and being crowned Queen of the Eighth Dimension. She bid Lorcan farewell as her first duty of being the Queen is begun.