Complete the indicated task in Story mode/Grand Prix to unlock the corresponding character signature card.

Card	How to unlock
Bolt Tanner	Defeat Bolt Tanner in Stage 6-B.
Burning Skull Head	Defeat Hunter Pace in Stage 6-A.
Facility Chief's Duel Runner	Defeat Facility Chief in Stage 3.
Greiger (Matchup Mode)	Defeat Greiger in Stage 7.
Hoodlum's Duel Runner	Defeat Hoodlum in Stage 1.
Hunter Pace (Matchup Mode)	Defeat Hunter Pace in Stage 6-A.
Jack Atlas (Matchup Mode)	Complete Story Mode twice.
Leo's Duel Runner	Defeat Leo in Stage 2-A.
Luna's Duel Runner	Defeat Luna in Stage 5-B.
Mad Archfiend	Complete Story mode twice.
Normal Duel Runner(Bolt Tanner's Duel Runner)	Defeat Bolt Tanner in Stage 6-B.
Officer Tetsu Trudge (Matchup Mode)	Defeat Officer Tetsu Trudge in Stage 4.
Officer Tetsu Trudge's Duel Runner	Defeat Officer Tetsu Trudge in Stage 4.
Security 2's Duel Runner	Win the Silver Cup in first place.
Skull Collector	Defeat Hoodlum in Stage 1-A.
Sparks	Defeat Greiger in Stage 7 two times.
Stardust Dragon	Defeat Story Mode once.
Summon Reactor-SK	Defeat Greiger in Stage 7.
Sunlight Unicorn	Defeat Luna in Stage 5-B.
Tremendous Fire	Defeat Hunter Pace in Stage 6-A two times.
Ushi Oni	Defeat Bolt Tanner in Stage 6-B.
Wall of Ivy	Defeat Akiza in Stage 5-A.
Wheel of Fortune (Jack Atlas' Duel Runner)	Complete Story mode twice.
Yusei Fudo (Matchup Mode)	Complete Story mode.
Yusei's Duel Runner	Complete Story mode.