In their first appearance, Mark & Sparks worked alongside Tails in finding the secret base of a number of Badniks terrorizing the Casino Night Zone. The chimps put together a Cyclops disguise for Tails so he could infiltrate the Badniks' lair, but when he was accidentally given away, he was forced to resort to plan B. Mark and Sparks guided Tails between two pylons, and right on cue, shocked the Badnik horde into submission. Much to the displeasure of Max Gamble, this move caused a power failure in his casino, but the Zone's residents were quick to rally to the defence of Tails and the chimps.