the first gym leader is brock.
The Snowpoint City Gym Leader is in the gym, at the very back.
Brock is the first gym leader in pewter city.
You kill the Gym Leader's Pokemon with your Tepig.
The first gym in Pokemon diamond is in Oreburgh City
From the 1st gym leader
Pewter City.
to azalea town
he's in oreburgh city
in her gym u have 2 beat veilstone & pastoria 1st
after you've defeated the 1st gym leader
Geodude, Cranidos.
Ok i don't get you The 1st gym leader is Roark. Candice is the 7th gym leader. Ummm, dude who answered... they mean what Pokemon does Candice use first. and the answer is Snover i guess