Xandra is the keeper of the magical Golden Atlas, which connects many mythological realms throughout the cosmos together. Long ago, the dark sorcerer Felldrake imprisoned her in the atlas, forcing her to take him to these different realms and build an army of monsters to conquer the world. He was foiled by the original Three Caballeros and sealed away, with Xandra joining them on adventures to undo the damage he did and seek a way to break the spell on her. In one fierce battle though, her book was closed and stuck shut, remaining in Clinton Coot's collection for many years. Eventually, Coot's cabana was inherited by Donald Duck, Panchito Pistoles and José Carioca, who she decided to help train as the next generation of the Three Caballeros.
- "Xandra" is a diminutive form of the name "Alexandra" (the feminine form of Alexander); the name has the meaning of "one who comes to save warriors" or "battle-prowess", similar to Xandra's warrior nature.
- Xandra appears to function as the show's animated equivalent to the various live-action women that appeared in the Three Caballeros film.