Eldora, known as the Witch of Calamity, is one of the Seven Sages, a group of immensely powerful witches. Her background is rooted in tragedy and a destructive act that earned her fearsome reputation. She was responsible for the annihilation of the military dictatorship nation of Orlov. This act of destruction, which she committed as revenge for the death of her family, was also intended to prevent a larger war between humanity and magic users. The magical disaster from this event left the series protagonist, Meg Raspberry, orphaned as a child. This tragic connection reveals that Eldora is the indirect cause of Meg's suffering and the source of her curse.

Eldora's personality is shrouded in mystery, by design. She constantly cloaks herself in magic that distorts the perception of others, ensuring that very few can claim to have truly seen or met her. This magical concealment makes her intentions and her true nature difficult to grasp, leaving others to wonder if she is an ally or a threat. Despite her terrifying title and calamitous actions, she is not a simple antagonist. She has expressed regret for the destruction she caused, suggesting a complex interiority and a burden of guilt for the lives she has affected.

Eldora's role in the story is deeply tied to the protagonist's past and future. She is revealed to have been raised by the long-lived witch Faust, just as Meg was, making Eldora Meg’s senior apprentice and, in a sense, her sister in magic. This connection forces Meg to reconsider everything she believed about her origins and Faust’s intentions. As the Witch of Calamity, she serves as a direct link to the central mystery of Meg’s curse and the disaster that shaped her life, making her a pivotal figure in Meg's journey of self-discovery. Whether she is a future enemy or an unexpected ally remains ambiguous, as she embodies both a threat and a key to unlocking the past.

Her key relationship is with Faust, her teacher and adoptive parental figure. This shared mentorship is what creates her profound, albeit complicated, bond with Meg. Another crucial relationship is, by default, with Meg herself, who must now grapple with the fact that the witch responsible for her mother's death is also her magic sister. This revelation drives a new chapter in Meg's quest to understand herself and her past.

In terms of development, Eldora’s actions show a capacity for change and remorse. While she once destroyed a country, she has since become a figure of regret, complicating her legacy as merely a force of calamity. For most of the story, she is an enigmatic presence seen in nightmares and referenced as a legendary figure. Her definitive appearance and the revelation of her connection to Faust and Meg mark a significant turning point in the narrative, transforming her from a distant legend into a personal and immediate part of Meg's life.

Eldora possesses remarkable abilities that set her apart even among the Seven Sages. Her primary specialty is curses, an art in which her power is considered to be on the same extraordinary level as Faust’s. Beyond offensive magic, she is a master of concealment, using magic to hinder perception so effectively that her true form remains hidden from almost everyone. This ability to remain an enigma is perhaps her most defining skill, allowing her to be present yet unseen and to act without her true motives being understood.