All bonus characters: Access the operator's menu. Select "Configuration",
then "Game". On player one's side, press Up,
Down, Right, Left, 1, 2, 3,
4. A sound from Dio will confirm correct code entry. Select
the "Save And Exit" option. Shadow Dio, Kan, New Kakyoin,
Hol Horse with Voing, Robber Soul, and JoJo will now be unlocked.
Hint: Fight against Death 13: Do not lose any matches as any of the main six characters
(Jotaro, Joseph, Avdol, Iggy, Polnareff, Kakyoin). The message
"Here comes a new challenger" will appear, and Death
13's name will appear.
