In the beginning, Squirtle would be a good choice. This is because he boosts incredible water strength and moves. His final evolved form is Blastoise, which is the ultimate water pokemon in the game. Blastoise has great Attack and Defense, and can take on many gyms and also defeat the Elite 4 easily. His best moves to learn would be Hydro Pump,Hydro Cannon,Skull Bash,and Focus Punch. He has ultimate ownage power among Fire,Rock,Steel,and Ground types of pokemon, and makes a great strong defender.