Pokémon has developed a large number of distinct species throughout the years, each with unique elemental abilities and traits.

Pokémon has developed a large number of distinct species throughout the years, each with unique elemental abilities and traits.

The Generations television series has included brand-new settings and people in each of its episodes.

The Generations television series has included brand-new settings and people in each of its episodes.

There are approximately 100 new species, though the number may vary depending on the instalments.

There are approximately 100 new species, though the number may vary depending on the instalments.

Red and Green (known as Red and Blue outside of Japan) of the First Generation introduced 151 unique species for players to capture, educate, and become friends with.

Red and Green (known as Red and Blue outside of Japan) of the First Generation introduced 151 unique species for players to capture, educate, and become friends with.

100 more were included in Pokémon Gold and Silver of Generation 2, increasing the total to 251. Ruby and Sapphire added 135 more in Generation 3, bringing the total up to 386.

100 more were included in Pokémon Gold and Silver of Generation 2, increasing the total to 251. Ruby and Sapphire added 135 more in Generation 3, bringing the total up to 386.

Black and White of Generation 5 added 156 new species, while Diamond and Pearl of Generation 4 added 107 more, bringing the total number of species to 649.

Black and White of Generation 5 added 156 new species, while Diamond and Pearl of Generation 4 added 107 more, bringing the total number of species to 649.

Only 72 of the 721 species were present in X and Y at the sixth generation.

Only 72 of the 721 species were present in X and Y at the sixth generation.