Nidorina
When you give the Moon Stone to Nidorina, she will automatically evolve into Nidoqueen. She will retain her original moves, and will be able to learn new moves specific to her new form. This evolved Pokemon is more powerful overall, and will further aid the player in winning Pokemon battles.
Nidorino
When the Moon Stone is given to Nidorino, he will automatically evolve into Nidoking. He will retain his original moves, and will be able to learn new moves specific to his new form. This evolved Pokemon will help the player win most Pokemon battles with his increased power.
Clefairy
When the Moon Stone is given to Clefairy, it will automatically evolve into Clefable. The Clefable is much larger and more physically powerful than its previous form. The increased physical power will create a well-rounded Pokemon, which will better serve the player in Pokemon battles.
Jigglypuff
When the Moon Stone is given to Jigglypuff, he will automatically evolve into Wigglytuff. This Pokemon is more physical than Jigglypuff, and because of this will learn more moves based on physical attacks. Wigglytuff can better assist the player in Pokemon battles with its use of both physical and magical attacks.