Nature

Natures are the Pokémon analogue of personalities. They were introduced by the Generation III games and remain a game mechanic in Generation IV. Each Pokémon in these games has one of 25 natures, as listed and described in the table below. A Pokémon's nature usually affects the growth rate of two of its stats, ultimately increasing one of its stats by 10% and decreasing another of its stats by 10%. Five of the possible natures, however, have no affect on the Pokémon's stat growth. (Note that despite these relationships to Pokémons' development, natures do not affect experience or DVs.) Natures also determine the Pokémon's favorite flavor of food and which flavor it dislikes. The exception is again the five previously mentioned "neutral" natures, which cause a Pokémon to not like or dislike any flavor.

The following table lists each nature and its affect on a Pokémon; it may be rearranged by clicking the boxes next to each column's heading.

#	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	—	—	—	—