Keroppi is a popular character created by the Japanese company Sanrio. He is a green frog known for his cheerful personality and big, round eyes. Keroppi lives in a pond called Donut Pond and enjoys spending time with his friends, including Keroleen and Ganta. Keroppi first appeared in 1988 and quickly became a favorite among fans of Sanrio characters, which also include Hello Kitty and My Melody. His design features a distinctive wide smile and a playful demeanor, making him a symbol of fun and friendship.