Jojo's Bizzare Adventure: Heritage For The Future Codes -

Kid mode (Jojo's Bizzare Adventure):
Defeat more than fifteen characters in survival mode to unlock kid mode, which allows the characters to appear as kids.

Play as Young Joseph (Jojo's Bizzare Adventure):
Successfully complete arcade mode as Joseph.

Play as Evil Dio (Jojo's Bizzare Adventure):
Successfully complete arcade mode with Dio.

Play as Evil Dio (Heritage For The Future):
Successfully complete challenge mode as Dio to unlock Evil Dio.

Play as Young Joseph (Heritage For The Future):
Successfully complete challenge mode with Joseph.

Play as Dio (Jojo's Bizzare Adventure):
Successfully complete arcade mode with Jotaro.