>>18234911For his final league, either Pikachu since it's been with him the longest or Charizard as a callback to the time it refused to follow Ash's orders against Richie which cost him his first (?) league.
You can even combine the two. Have Charizard go beast mode like the time Ash fought Gary and beat 3 pokemon. The damage from the battles takes its toll and it gets knocked out by the opponent's last pokemon. Pikachu comes in last for the hard fought win.
