Four

Misty blinked, looking herself directly in the eyes.

"Did I drown?"
"Did I drown?"

Two of them spoke at the same time, while the other two screamed.

Their screaming made the first two scream.

Soon enough everyone was screaming.

The first two to scream swam towards the platform as fast as they could, and once they reached it they immediately dove to grab their Pokéballs. Two hands grabbed the same ball at the same time, starting a brief tug of war match.

"Who are you!?" Misty yelled as she pulled on her Pokéball. "And let go of my Pokémon!"

"My name is on the gym idiot," Misty yelled back. "And this is my Pokémon!"

"No it's not!"

"Yes it is!"

The ball slipped from their hands, and out popped their Pokémon, the serpentine and ferocious Gyarados. It looked down on the identical quartet, clearly ticked off.

"Uh oh."