Nombre original: 仮面ライダーガッチャード どうする！？宝太郎とりんねがいれかわっちゃった！！
Fecha de estreno: 3 de abril de 2024
Película
Tiempo promedio: 17 minutos
Géneros: Acción, Comedia, Ciencia ficcion
Sinopsis: In this special, Houtaro and Rinne swapped bodies! In order to return to their original bodies, they need to a complete mission given to them by Firemars and Inphoenix! To help them, both Professor Minato and Supana are acting differently?! The special will also feature the debut of Kamen Rider Gotchard MarsPhoenix!