Chizuko Oe is a supporting character in the anime Mahoromatic: Automatic Maiden. She appears as one of the friends and classmates of the protagonist, Suguru Misato. Chizuko has a youthful appearance with blonde or yellow hair often styled in twintails, orange eyes, and is one of the shorter members of the student group. Her family background is tied to the publishing business, as her father is involved in the production of magazines.

Chizuko has a notably strong enthusiasm for food, demonstrating a keen interest in cooking and cuisine. She is described as a food connoisseur who eagerly samples the various dishes prepared by the titular character Mahoro, often becoming excited when tasting something particularly delicious. This love of eating is a defining personality trait that distinguishes her from other classmates. Beyond her culinary interests, Chizuko also has a mischievous or entrepreneurial side, as she occasionally tries to sell adult-oriented magazines to her friend Suguru, an activity that is consistently stopped by the disapproving Mahoro.

Within the story's setting at school, Chizuko is part of Suguru's social circle and is often seen alongside other recurring characters such as Miyuki Sakura and Rin Todoroki. While not a primary driver of the main plot involving Mahoro's combat android past, Chizuko is present during key events, including being saved from a near-accident by the mysterious combat android Tou Ryuga when he first arrives at the school. Her role is primarily that of a supportive and comic relief friend, reacting to the unusual situations surrounding Mahoro rather than being directly involved in the science fiction conflicts. Her key relationships are with her fellow students, as she shares a casual friendship with Suguru and the others, interacting with them during school and social activities. She does not have significant personal development or a dramatic character arc, remaining a consistent and lighthearted presence focused on her immediate interests in food and socializing.