K.K. is a popular character from the video game series Animal Crossing, created by Nintendo. He is a white dog known for his love of music and plays various songs for players every Saturday night in the game. Players can collect his music by attending his performances and can later listen to the songs in their in-game homes. In the games, K.K. is often seen wearing a green and white striped shirt and playing his guitar. He has become an iconic figure within the Animal Crossing community, representing the joy of music and community gatherings. His character adds a unique charm to the overall gaming experience.