- each Pokémon has a single pre-designated ability
- there’s no way of changing what this is
- some Pokémon are capable of having one of two pre-designated abilities
- the ability is chosen at random when you encounter the Pokémon in the wild
- during breeding, the baby Pokémon’s ability is now dependent on its mother
- if the mother is a dual-ability type, the baby has an 80% chance of inheriting that ability
- this gives the baby a 20% chance of inheriting the other ability that the mother doesn’t have
- you can now 100% guarantee that your Pokémon will inherit a nature from one of its parents
- to do this, give one of the parents an Everstone to hold