I concur, i was helping my wife figuring out pokemons that started with a letter for our making alphabets for my kids room, and it came up with a list where some of the pokemons didnt start with C.

Me: look at the list again there are some without c as the starting letter

ChatGPT: Apologies for the confusion. Here is the corrected and distinct list of Pokémon whose names start with the letter "C":

Caterpie Metapod Butterfree Charmander Charmeleon Charizard Clefairy Clefable Cleffa