Byron (as Roark's Dad.)
He is the 6th Gym leader in Diamond, Pearl, and Platinum.
Also his Pokemon is Steel type.
Um What
The 6th gym leader is in Canalave City.
ghost
pastoria city
At the very bottom.
The Pokémon the second Gym Leader has in "Diamond" are Cherubi, Turtwig and Roserade.
The first gym in Pokemon diamond is in Oreburgh City
in the forest by the 2 gym leader
hearthome city leader
volkner
No
Um What
no you can't
One of your Pokemon has to learn surf.
The 6th gym leader is in Canalave City.
eterna city
maylene