* Will: The first member, specializing in Ghost-type Pokémon.
* Koga: The second member, specializing in Poison-type Pokémon.
* Bruno: The third member, specializing in Fighting-type Pokémon.
* Karen: The fourth member, specializing in Dark-type Pokémon.
Remember, after defeating all four members, you'll face the Champion, Lance, who uses Dragon-type Pokémon. Good luck!