Professor Fred Peeper, known as Professor Asuka in the original Japanese version of the anime Superbook, is a supporting character who serves as the father of the main protagonist, Christopher Chris Peeper, and the husband of Phoebe Peeper. He is an archaeologist and scientist by profession, characterized as an eccentric and somewhat absent-minded scholar whose fascination with the past drives much of his work. In terms of appearance, he is depicted with long dark brown hair, a dark brown mustache, and thick black-framed glasses, giving him a distinctly academic look.

His personality blends intellectual curiosity with a warm and dependable nature. He is a gentle and trustworthy mentor figure who cares deeply for the younger characters, particularly his son Chris and Chris's best friend Joy. As a scientist, he is deeply interested in the idea of exploring history and the Bible, and he is portrayed as a brilliant mind who values knowledge and discovery. Despite his scholarly focus, he remains approachable and patient, and his vast knowledge of history and culture proves essential when the children travel to different time periods, as he offers guidance and helps them understand the significance of the events they witness while being careful about not altering the course of history.

Within the story, Professor Peeper functions as both a family figure and a guiding presence. He is the father of Chris, whose ordinary home life is interrupted when the mysterious book called Superbook reveals its power to send Chris, Joy, and the robot Gizmo back in time to experience biblical events. The professor himself is unaware at first that Superbook possesses supernatural abilities, and he regards it as part of his studies rather than as a miraculous object. His background as an archaeologist ties him naturally to the exploration of ancient history, and his scientific mindset provides a bridge between modern life and the biblical world that the children visit. Over the course of the series, his role expands to include the broader Peeper family, as the second season reveals that he is the uncle of Uriah Uri Peeper, the son of his brother Kenneth Ken Peeper, a computer programmer who helps operate the newly computerized Superbook.

In terms of development, Professor Peeper remains a steady and consistent figure throughout the series. His primary motivation is the pursuit of knowledge, particularly the desire to understand history and the Bible through scientific means, alongside a genuine concern for the well-being and moral growth of the children under his care. His key relationships center on his family, especially his son Chris, with whom he shares a typical father-son dynamic that includes occasional friction over Chris's reluctance to apply himself to schoolwork and chores, and his role as a mentor to Joy and to his nephew Uri. His notable abilities lie not in physical action but in his intellect, including his archaeological expertise, his historical knowledge, and his scientific ingenuity, all of which allow him to interpret events, offer explanations, and keep the young travelers oriented as they move through different eras. Through his wisdom and kindness, he serves as a reassuring anchor for the series, encouraging a thoughtful and wonder-filled engagement with biblical history.