Game: Pokemon

All Pokemon games I played only on DS.
Till now I still can't find out which better than Torterra, the attribute of him are "grass" and "ground", actually only one will be choosen as my adventure path(one only): from begining(selecting one of 3 pokemons when start) to ends(defeat all boss) , he never lose one match(without switching and no defeated, only he be used every matchs) while I never experence with other pokemons like him.

I have to switch to other pokemon when health low or it even already been defeated but only happend when I partner with other pokemons, not Torterra.

I think I will still make Torterra as partner when I start an other Pokemon game :)