Keroppi Hasunoue is a fictional character from the Sanrio franchise and appears in the series Sanrio Danshi. As a cheerful and energetic frog, Keroppi is known for his bright personality and optimism. In Sanrio Danshi, he serves as the mascot character who inspires and encourages the main boys to express their love for Sanrio characters openly. Keroppi's friendly demeanor and supportive role help foster a sense of unity and acceptance among the group.