what you need to do raise your pokemons level high enough that you can beat all of them hope i helped from Fire King
Battle the rest of them
you go down south and you will see a man that will give you an item then you do the rest.
You can get wobbafet in cerelean cave Note. You have to beat the elite 4 first and defeat the rest of team rocket
well u can catch the rest of the rares
Blue (The eighth gym leader) is waiting on Cinnabar. He won't battle you unless you've beat the rest of the gym leaders
you need to beat the gym leader in mahogany Town then fly to goldenrod.
you beat all of team rocket and then follow the rest of the tunnel
No type can beat the other types in pokemon they each have strengths and weaknesses and not one can conquer the rest.
just use good Pokemon His Pokemon are weevle\houndoom and i forgot the rest?!
Beat the rest of the gym leaders first.
Get the Silph Scope from the Celadon Rocket Hideout, then ascend to the top of the Pokemon Tower. Then, you'll be able to identify Marowak and defeat it to lay it to rest.
youy will need flash, all hm's, and rock smash. all the rest you might find useful in battle such as rest, toxic, and thunder.