Echoes is a Stand featured in the manga and anime series JoJo's Bizarre Adventure, specifically Part 4: Diamond is Unbreakable. It is wielded by Koichi Hirose and possesses the unique ability to create sound effects that become reality. Echoes has three different forms, each with distinct powers. This Stand plays a crucial role in the series, aiding Koichi and his allies in battles against various antagonists by utilizing its versatile and strategic abilities. Echoes' evolution throughout the series reflects Koichi's growth as a character.