Pokémon FireRed and LeafGreen/Natures

Natures were introduced in Pokémon Ruby and Sapphire versions. Natures boost up your stats depending on which nature your Pokémon is. They also effect what flavors of pokéblock that Pokémon prefers.

Nature	Attack	Defense	Special Attack	Special Defense	Speed	Likes	Dislikes
Adamant	Rises Quickly	N/A	Rises Slowly	N/A	N/A	Spicy	Dry
Bashful	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Bold	Rises Slowly	Rises Quickly	N/A	N/A	N/A	Sour	Spicy
Brave	Rises Quickly	N/A	N/A	N/A	Rises Slowly	Spicy	Sweet
Calm	Rises Slowly	N/A	N/A	Rises Quickly	N/A	Bitter	Spicy
Careful	N/A	N/A	Rises Slowly	Rises Quickly	N/A	Bitter	Dry
Docile	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Gentle	N/A	Rises Slowly	N/A	Rises Quickly	N/A	Bitter	Sour
Hardy	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Hasty	N/A	Rises Slowly	N/A	N/A	Rises Quickly	Sweet	Sour
Impish	N/A	Rises Quickly	Rises Slowly	N/A	N/A	Sour	Dry
Jolly	N/A	N/A	Rises Slowly	N/A	Rises Quickly	Sweet	Dry
Lax	N/A	Rises Quickly	N/A	Rises Slowly	N/A	Sour	Bitter
Lonely	Rises Quickly	Rises Slowly	N/A	N/A	N/A	Spicy	Sour
Mild	N/A	Rises Slowly	Rises Quickly	N/A	N/A	Dry	Sour
Modest	Rises Slowly	N/A	Rises Quickly	N/A	N/A	Dry	Spicy
Naive	N/A	N/A	N/A	Rises Slowly	Rises Quickly	Sweet	Bitter
Naughty	Rises Quickly	N/A	N/A	Rises Slowly	N/A	Spicy	Bitter
Quiet	N/A	N/A	Rises Quickly	N/A	Rises Slowly	Dry	Sweet
Quirky	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Rash	N/A	N/A	Rises Quickly	Rises Slowly	N/A	Dry	Bitter
Relaxed	N/A	Rises Quickly	N/A	N/A	Rises Slowly	Dry	Sweet
Sassy	N/A	N/A	N/A	Rises Quickly	Rises Slowly	Bitter	Sweet
Serious	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Timid	Rises Slowly	N/A	N/A	N/A	Rises Quickly	Sweet	Spicy