A Pokémon's Nature is a crucial factor that influences its stats. Each Nature boosts one stat by 10% and lowers another by 10%. Some Natures are neutral, affecting no stats. Understanding Natures is vital for optimizing your Pokémon for specific roles:

- Offensive Natures: Adamant (+Attack, -Sp. Atk), Jolly (+Speed, -Sp. Atk) for physical attackers; Modest (+Sp. Atk, -Attack), Timid (+Speed, -Attack) for special attackers.
- Defensive Natures: Impish (+Defense, -Sp. Atk), Careful (+Sp. Def, -Sp. Atk) for physical walls; Bold (+Defense, -Attack), Calm (+Sp. Def, -Attack) for special walls.
- Neutral Natures: Hardy, Docile, Serious, Bashful, Quirky. These are generally less desirable for competitive play but don't hinder any specific stat.
When catching or breeding Pokémon, aim for a Nature that complements their base stats and intended role. For example, a Garchomp (high Attack, high Speed) benefits greatly from an Adamant or Jolly Nature.