To unlock these secret characters, scout these characters.

Character	How to unlock
Canon	Scout Mark (Raimon), (Raimon II), and (Inazuma National)
Feldt (Brainwashing)	Scout Feldt (Dark Emperors)
Gazelle (Fire Dragon)	Scout Aphrodite (Int'l Allstars)
King (Royal Redux)	Scout King (Royal Academy) and (Neo National)
Night (Kirkwood)	Scout Night (Dark Emperors)
Samford (Royal Redux)	Scout Samford (Royal Academy) and (Neo National)
Shadow (Raimon)	Scout Shadow (Dark Emperors)
Stonewall (Royal Redux)	Scout Stonewall (Inazuma National)
Torch (Fire Dragon)	Scout Aphrodite (Int'l Allstars)