Cornelia Adenauer is a supporting character in the anime The Too-Perfect Saint: Tossed Aside by My Fiancé and Sold To Another Kingdom. She is primarily known for her role as the mother of the noble Adenauer family.

In terms of background, Cornelia is married to Georg Adenauer, and together they are the parents of Philia and Mia Adenauer. The Adenauer family is famous on the continent for its exceptional magical talents and has a history of producing numerous saints for the kingdom of Ziltonia. True to this legacy, Cornelia is depicted as being driven by a very strong desire for power and ambition, much like her husband. This shared motivation is a defining aspect of her personality and greatly influences her actions within the story.

Her primary role in the narrative is tied to her ambition and her relationship with her daughter, Mia, whom she cherishes. Cornelia actively participated in a plan orchestrated by Prince Julius Ziltonia. The design of this scheme was to secure an engagement between her beloved daughter, Mia, and the prince, likely as a means to elevate the family's standing and influence.

The consequences of this involvement are significant for her character. Following the public exposure of Prince Julius Ziltonia's crimes, Cornelia, along with her husband Georg, faced severe repercussions for their support of him. In an act of punishing the family for their complicity, Cornelia was banished from the Adenauer family. This decree was carried out by her sister-in-law, Hildegard Adenauer, who is Georg's older sister and the former saint of Ziltonia. This event marks a major downfall from her position of power and seemingly concludes her active role in the main storyline. No specific notable abilities or magical talents unique to Cornelia, separate from the usual powers of the Adenauer family, are detailed in the available information.