As Natures são características individuais dos Pokémon, que podem ser compreendidas como as suas personalidades. Um Pokémon somente pode possuir uma Nature. A maioria das Natures influencia nos stats dos Pokémon, aumentando em 10% um dos stats, ao passo que reduz em 10% o valor de outro. Algumas Natures, por outro lado, não possuem qualquer influencia nos stats.
| Nature | Stat+ | Stat- |
|---|---|---|
| Hardy | — | — |
| Lonely | Attack | Defense |
| Brave | Attack | Speed |
| Adamant | Attack | Sp. Attack |
| Naughty | Attack | Sp. Defense |
| Bold | Defense | Attack |
| Docile | — | — |
| Relaxed | Defense | Speed |
| Impish | Defense | Sp. Attack |
| Lax | Defense | Sp. Defense |
| Timid | Speed | Attack |
| Hasty | Speed | Defense |
| Serious | — | — |
| Jolly | Speed | Sp. Attack |
| Naive | Speed | Sp. Defense |
| Modest | Sp. Attack | Attack |
| Mild | Sp. Attack | Defense |
| Quiet | Sp. Attack | Speed |
| Bashful | — | — |
| Rash | Sp. Attack | Sp. Defense |
| Calm | Sp. Defense | Attack |
| Gentle | Sp. Defense | Defense |
| Sassy | Sp. Defense | Speed |
| Careful | Sp. Defense | Sp. Attack |
| Quirky | — | — |