What does the Calm nature do?

Calm raises Sp. Def by 10% and lowers Attack by 10%.

What stat does Calm increase?

Calm increases Sp. Def by 10% and decreases Attack by 10%. HP is unaffected.

A Calm Pokémon likes Bitter flavors (tied to Sp. Def) and dislikes Spicy flavors (tied to Attack).

Yes. Use a Calm Mint to apply the Calm stat effect to any Pokémon without changing its displayed nature.

Nature

Raises Sp. Def, lowers Attack.

Raises Sp. Def +10%

Lowers Attack −10%

LikesBitter

DislikesSpicy

Special walls that don't rely on physical attacks. A top defensive nature.

Gentle −Defense Sassy −Speed Careful −Sp. Atk

What does the Calm nature do?: Calm raises Sp. Def by 10% and lowers Attack by 10%.
What stat does Calm increase?: Calm increases Sp. Def by 10% and decreases Attack by 10%. HP is unaffected.
What flavor does a Calm Pokémon like?: A Calm Pokémon likes Bitter flavors (tied to Sp. Def) and dislikes Spicy flavors (tied to Attack).
Can I change a Pokémon to Calm?: Yes. Use a Calm Mint to apply the Calm stat effect to any Pokémon without changing its displayed nature.