The VS Series expansion was a Japanese sequel to Gym Heroes Challenge featuring Johto Gym Leaders & Elite 4! I love that each Trainer's cards were all drawn by the same artist which makes for lovely Secret Mission Precios Pokemon Japanese Leaders' Stadium Tarjetas de Pokemon Gym Badge (XY Promo 203) Bulbapedia, the community driven Pokmon encyclopedia title Challenge from the Darkness the original Gym Challenge, Japanese style compared to its predecessor, Leader's Stadium (Gym Heroes) this box definitely brings a darker aura to the sequel set!