Petey Piranha was sleeping peacefully in the tropical Alola region on the top of a tropical palm tree's leaves when suddenly he was pelted by a barrage of water type attacks. Petey screamed as he fell right off the tree, landing flat on his stomach as he groaned in pain. Petey got back up, to see several Wingull and Pelipper laughing at him as they flew towards the mainland. Growling with rage, Petey got high into the sky as he flapped his big green leaves, roaring at the bird Pokemon as he then barfed up brown goop at the water and flying type birds, causing them to fall straight into the water.
Petey had some satisfaction, but sadly for him that wouldn't last, as there were more Pokemon willing to ruin his day...