Hello! very funny this contest!
My Started is Charmander. Because if you have one of the most powerful evolutions of the game, aside you have a mega evolution.
I'm not a fan of Charizard, my favorite is a poke from another generation (Tyranitar), it's a pity that Larvitar can not be a Started.
Charmander has very powerful fire attacks, it is very versatile since it can be used both as a physical and special attacker, if we talk about Charizard there is the example with its two mega evolutions. In-Game, Charmander makes the game more difficult to be the first gym completely against this pokemon and it is great to play in difficult games!