* Byron's team is heavily Steel-type: Byron's main Pokémon are Steel-type, making them very resistant to Fighting-type attacks. Both Riolu and Lucario are Fighting-type, making them ineffective against Byron's team.
* Lucario's weaknesses: Lucario is also weak to Fire, Flying, and Psychic-type attacks. Byron has a Steelix that could potentially use Flamethrower or Earthquake, making Lucario vulnerable.
Instead of Riolu or Lucario, consider using these Pokémon:
* Fire-type Pokémon: Fire-type Pokémon are super effective against Steel-type. You could use a Monferno, Infernape, or even a Magmortar (if you caught one).
* Ground-type Pokémon: Ground-type Pokémon are also very effective against Steel-type. Consider using a Garchomp, Gliscor, or even a Hippowdon.
* Fighting-type with a good movepool: While Fighting-type is not ideal, you can still use a Fighting-type Pokémon if you have a good movepool. Consider using a Machamp with Earthquake or a Lucario with Aura Sphere (if you are confident in dodging the attacks).
Remember, the key is to choose Pokémon that have a type advantage against Byron's Steel-type team. By carefully considering your options, you can increase your chances of winning the battle.