* Stealth Rock is a move, not an ability: Aggron can't learn Stealth Rock.
* Stealth Rock is a move only for certain Pokémon: Stealth Rock is a move that only certain Pokémon can learn through breeding, leveling up, or TM. Aggron is not one of those Pokémon.
Here's how to get Stealth Rock on a Pokémon:
1. Find a Pokémon that learns Stealth Rock: Some common Pokémon that learn Stealth Rock are:
* Garchomp: Learns it by leveling up
* Tyranitar: Learns it by leveling up
* Rhyperior: Learns it by leveling up
* Regirock: Learns it by leveling up
2. Breed the Pokémon: You'll need to breed the Pokémon with a Pokémon that knows Stealth Rock. This will pass down the move to the offspring.
Here's how breeding works:
* Gender: Most Pokémon have genders, and some moves are only passed down from one gender to the other. You'll need to find a male Pokémon that knows Stealth Rock and breed it with a female Pokémon of the same species.
* Egg Moves: Not all moves are passed down through breeding. Some moves are considered "Egg Moves," which means they are only passed down from the parent Pokémon.
* Compatibility: Certain Pokémon can only breed with specific other Pokémon.
Remember: Aggron can't learn Stealth Rock, but you can find a Pokémon that can learn it and use it on your team.