Rive is a Fusion Spawn that not only deserted Fuse, but began to fight against him. Rive met a robot named Blue and Blue convinced him to help Blue against Fuse and find his missing buddy, Zack Tonami. Rive is one of many Fusion rebels. Blue and Tails gave him a translator to speak, but it soon combined with his body and he can now talk. Rive wears a mask so that he won't add even more Fusion Matter to the environment.