Each Pokemon has a random nature given to it from 25 different Natures. These Natures increase one of the Pokemon’s stats by 10% while decreasing another one by 10%.

There are five natures that increase and decrease the same stat by 10% which in the end has no effect on their overall stats. Typically you want to have a nature that benefits the Pokemon’s main stat and hurts one that it doesn’t use. (For example: Increase ATK while decreasing SP. ATK.)

# Nature Increased stat Decreased stat Favorite flavor Disliked flavor
0 Hardy
1 Lonely Attack Defense Spicy Sour
2 Brave Attack Speed Spicy Sweet
3 Adamant Attack Sp. Attack Spicy Dry
4 Naughty Attack Sp. Defense Spicy Bitter
5 Bold Defense Attack Sour Spicy
6 Docile
7 Relaxed Defense Speed Sour Sweet
8 Impish Defense Sp. Attack Sour Dry
9 Lax Defense Sp. Defense Sour Bitter
10 Timid Speed Attack Sweet Spicy
11 Hasty Speed Defense Sweet Sour
12 Serious
13 Jolly Speed Sp. Attack Sweet Dry
14 Naive Speed Sp. Defense Sweet Bitter
15 Modest Sp. Attack Attack Dry Spicy
16 Mild Sp. Attack Defense Dry Sour
17 Quiet Sp. Attack Speed Dry Sweet
18 Bashful
19 Rash Sp. Attack Sp. Defense Dry Bitter
20 Calm Sp. Defense Attack Bitter Spicy
21 Gentle Sp. Defense Defense Bitter Sour
22 Sassy Sp. Defense Speed Bitter Sweet
23 Careful Sp. Defense Sp. Attack Bitter Dry
24 Quirky