Chuck soon found his way blocked by an Alolan Rattata.  Chuck was about to send out Ariel, but Sludge jumped down from his head to face the little rat.  "You sure you wanna face him Sludge?" he asked, and the Grimer nodded.  Chuck looked up some moves on his Pokedex and said "Alright, Sludge use Powerup Punch!"  The Grimer rushed at the Rattata and socked it in the face, knocking it back and raising Grimer's physical attack.  The Rattata retaliated with a bite, but Sludge retaliated with a Payback, knocking it back against the wall and KOing it, allowing Chuck to move on.