Out of the grand total of 1,164 (1,025 in the national dex) creatures in the series so far, there is a long list ... all things spooky. Mewtwo needs no introduction. The original Legendary Pokemon ...
You have to select the Pokemon you want to evolve and click on the Evolve button. If you have the required number of Candies specific to that creature and a Sinnoh Stone, the evolution will be ...