Press 'Space' to type in the Pokemon's National Dex number. Example: 1 for Bulbasaur. You can also press the left and right arrow keys to change the number by 1 either way. Some Pokemon have different forms. For example, Unown has a lot of different forms. So you can do 201-5. Another example is Venusaur, Venusaur has a Mega Evolution. So you can do 3-1. Press 'R' to get a random Pokemon.
You can copy this and put the sprites in you Pokemon game. Remember to like and love the game!