Ash Ketchum wanted to prove to Shamus that Tepig was a strong Pokémon and they decided to have a battle with Ash's Tepig as the focus. Ash's Tepig didn't battle until Ash's Snivy ended up getting knocked out. Right after that though, Ash's Tepig evolved into Ash's Pignite. After Ash's Pignite defeated Shamus, Shamus realized how much stronger Ash's Pignite had become and he tried to get it to join him again thinking that it would want to rejoin him despite the fact that he had rejected him a second time the day before. Ash's Pignite pretended that he was interested for a few moments before blowing fire into Shamus's face. Shamus ran off in psychotic pain while telling Ash's Pignite to remember him.