My favorite Pokemon are: Mew, Ditto, Charmander, Vulpix/Ninetails, Ponyta/Rapidash, Vaporeon, Espeon, Articuno, Munchlax, Mudkip, Lugia, Cyndaquil and more. Those are the ones I remember on the top of my head. I don’t think I played the game with Litten in it but after seeing it in a friend’s signature during Halloween, I’d definitely add Litten
.Couldn’t limit it just 5 since I love so many.
My favorite Pokemon to use were: Quagsire, Dialga (I don’t play competitively—didn’t have opportunity and didn’t understand iv/ev), Breloom, Zapdos, Sableye
Pokemon I never/rarely used but thought were fun and would like to (not for competitive play): Delibird (I always liked how its move is called present), Smeargle, Ditto, Munchlax.
I know substitute isn’t a Pokemon but I think it deserves an honorable mention for its cuteness.
@NefariousKing wouldn’t you agree?