Which starter pokemon will you use to fight with my chicorita?

Either Charmader, Torchic, Cyndaquil, Chimchar, Tepig or Fennekin! Any of the fire type starters would defeat Chikorita easily! (Unless the Chikorita is a way higher level)

Cyndaquil

any fire starter pokemon

Charmander

I would go with Charmander

Feraligatr because it's johto and it knows non water type moves or Venusaur