Yes, but name your Squirtle "Bulbasaur" so when the other kid hears that you're sending out "Bulbasaur" and swaps out for his fire type, you're sending in Squirtle, and his fire type is hosed. Literally.
Do this to your other pokemon, naming them something that would trick the other trainers into swaping out their pokemon, thinking they're going to gain the upper hand.
Unrelated to pokemon, Oslecamo I've updated the character draft for Rabbit on the Character draft page with the two pieces of the backstory. Would you need anything more added to it? I can make it a water "landing" if that would be cleaner for an intro.