"Well, for starters," the old man took out a few Pokeballs from his Pocket, "take these and capture two of the Pokemon you want in the Gym. I'm going to do that too, but I'll be faster so that I'll check out this area again."
The old man went back to the Gym Area and chose to capture these of the list:
-Aimpom
-Oddish
Battle: Altaria and Pikachu VS Oddish and Aipom
He drank some water from his bottle first, carefully after taking off the gas mask. The old man had to cheat to get the two into a two-against-two battle, using Altaria to use Dragon Rage on the two of them at the same time, in two different corners of the Gym. The old man drank some water. Due to its amazing ability, Altaria recovered shortly from a sleep powder attack, endured a scratch attack, and the old man saw his chance to catch them. He drank some more water.
Pikachu stood at Altaria's side, watching closely at the battle. It was to be a dummy for the moment and gain some experience points from it.
Taking out a stick, the old man hit two of the Pokeballs to aim both Pokemon, resulting in a double capture at around the same time. He sipped a little more water before sealing the bottle carefully.
The girls were amazed by the battle and squealed at how cute the old man's Pokemon were. The old man apologised and excused himself to the toilet again as he had "drank too much water". This was not true, as the old man, a.k.a. Pudding to her members, had pretended to drink heartily during each turn of the battle.
The old man sneaked into the room next to the toilet. There, he found, to his surprise, a girl in a Japanese costume, binded up. The girl happens to be the real Erika, who was gasping for breath. He put a mini-oxygen tank on her, and she spoke, "Go....area...where bellsprouts dance...on their....hands." before blacking out.