Brock is a rock type. I would suggest you use water types. His Pokemon are levels 40-50.
he is Brock. hes in pewter city.
Pewter City Gym. Same as always.
brock is the 6th gymleader
Brock.
after you beat the elite four, you can go to to the Kanto region. (at least i think its Kanto its the one with Brock and misty) at the first city, pewter town, there is a man next to the Pokemon center after you beat Brock he will give you the silver wing (gold version) or the rainbow wing (silver version).
Go through diglett cave by vermillion city, and if you have problems with the snorlax, message me.
Brock, in Pokemon Red and Green/Blue, has Onix (level 14) and Geodude (level 12) as his main Pokemon.
He is the Pewter City gym leader.
Brock the rock gym leader
Brock is the easiest gym leader in kanto he has ground type Pokemon so you want to bring either water type Pokemon or grass type Pokemon ice type Pokemon also work. Teach them there type moves and use them to receive your boulderbadge.
Brock is the first gym leader in pewter city.
Pewter City, in Kanto.