On one of the trains in the Battle Subway, Marshal battled with Mienshao against Alder and his Accelgor. Mienshao used Low Kick, to which Accelgor dodged. It was ordered Pound, but Accelgor used Double Team to dodge it. Mienshao used its "arm" to suspend Accelgor from one of the bars above in the cart. While watching the battle with a baker, Black was shocked when the baker told him that Accelgor won, even though no-one was defeated. Once the battle had finished, Marshal explained to Black that Accelgor spat a droplet of Acid Spray on Mienshao. If Accelgor used Acid Spray completely, the battle would ended with Alder and Accelgor winning.