Newton, also known as Noberun, is one of Keroppi's close friends in the Sanrio universe and appears in the 1992 OVA Kero Kero Keroppi no Christmas Eve no Okurimono. He is characterized as a deep thinker who enjoys conducting experiments and solving problems, often taking on the role of the intellectual within the group. Despite his sharp mind, he is not particularly athletic, preferring mental challenges over physical activities. Newton is motivated by his ambition to follow in his father's footsteps and become a weather forecaster for the government weather bureau, a goal that reflects his disciplined and responsible nature. His friends rely on him as a trustworthy and dependable companion, especially when thoughtful guidance or a creative solution is needed. In the Christmas-themed story, which centers on a star that falls from the sky and is helped by Keroppi, Newton provides practical support and companionship, using his analytical skills to assist with the situation. His key relationships include Keroppi, the main protagonist, as well as other friends from the Keroppi and Friends series such as Curtis, Soak, and Junk. Over the course of the special, Newton demonstrates his reliability and willingness to contribute to the group's efforts, though his character does not undergo significant personal development within this single episode. His notable abilities include critical thinking, a talent for experimentation, and a methodical approach to challenges, which make him an invaluable part of the team.