Green Jean 2: Enter the Nega-Jean

Green Jean 2: Enter the Nega-Jean is a 1997 platforming game released for the SEGA Saturn. It was co-developed by Cor-Son Games and Radical Entertainment and published by SEGA. In North America, it was a Saturn exclusive, but a direct port for the PlayStation was released in Europe through Virgin Interactive.

Plot
A revitalized Dr. Unk takes over a plantation company and plans to cover Welcher City in a deadly fog. To make matters worse, Jean's rival Kelly Cabocha gets exposed to the same radiation that afflicted Jean and she becomes a monster like her. Jean must stop Kelly and Dr. Unk.