
Quick answer — Grand Guerrilla worked on STEEL BALL RUN JoJo's Bizarre Adventure 1st STAGE (Sub Character Design), STEEL BALL RUN JoJo's Bizarre Adventure 2nd - 3rd STAGE (Sub Character Design).
Grand Guerrilla worked on STEEL BALL RUN JoJo's Bizarre Adventure 1st STAGE (Sub Character Design), STEEL BALL RUN JoJo's Bizarre Adventure 2nd - 3rd STAGE (Sub Character Design).