Chicchan is a puchidol, a small, mysterious creature, who closely resembles the idol Ritsuko Akizuki and made her debut relatively later in the series. Discovered on the street by the office worker Kotori Otonashi, Chicchan was brought into the agency where she was initially not accepted by Ritsuko, who would become her primary caretaker. However, the two eventually bonded over their clear similarities in personality and demeanor.

Personality-wise, Chicchan is notably the most intellectually gifted among the puchidols who are considered the smart ones. She is highly book-smart, capable of solving complex mathematical equations, understanding foreign languages, and processing intricate documents like bank statements. This sharp intelligence leads her to take on a stern, big sister-like role within the group of puchidols. She is often seen scolding the more incompetent adults around her and mediating conflicts between other puchidols and humans. When annoyed, she vocalizes her frustration, typically communicating with sounds like "Meh!" and, when particularly angry, "Mou!". Despite her serious and competent nature, she has a notable soft spot for the Producer; she is the only individual she cannot handle with her usual composure, to the point of fainting if the Producer strokes her hair. Her physical strength is limited, as she has weak arms and sometimes struggles to lift objects.

In the story, Chicchan acts as a crucial support figure. Her abilities are practical and highly valuable, as she can handle massive amounts of filing work, calculate budgets and maintenance costs for other puchidols, and even construct various objects using only simple materials like sticks and pebbles. For instance, she has demonstrated her strategic skills by winning at board games while teaming up with the idol Chihaya against the twins Ami and Mami. Her key relationships are defined by her role as a caretaker and mediator. She frequently engages with the other puchidols, particularly scolding the mischievous one named Afu, while also trying to maintain harmony between the creatures and the human staff. Her primary bond is with Ritsuko Akizuki, who serves as her counterpart and caretaker after their initially rocky start. While there is no extensive narrative development detailed across the series, her progression from being rejected by Ritsuko to being accepted shows a clear establishment of her place in the office, where she settles into her role as the smart, reliable, and occasionally flustered puchidol.