You get a gym badge by battling the gym leader. There is a gym in most towns and you go through a puzzle or maze type-thing to get to the leader. The gym has a brown roof and it is a big building. There are 8 Gyms in Sinnoh.
1. Roark - Oreburgh City - Rock Type Pokemon
2. Gardenia - Eterna City - Grass Type Pokemon 3. Maylene - Veilstone City - Fighting Type Pokemon 4. Crasher Wake - Pastoria City - Water Type Pokemon
5. Fantina - Hearthome City - Ghost Type Pokemon
6. Byron - Canalave City - Steel Type Pokemon
7. Candice - Snowpoint City - Ice Type Pokemon
8. Volkner - Sunyshore - Electric Type Pokemon
* Pewter Gym - Rock Badge * Cerulean Gym - Cascade Badge * Vermillion Gym - Thunder Badge * Celadon Gym - Rainbow Badge * Fuchsia Gym - Soul Badge * Saffron Gym - Marsh Badge * Cinnabar Gym - Volcano Badge * Viridian Gym - Earth Badge
8th gym badge the water badge
the fourth gym is in celadon city at the bottom left of the city. the gym leader is erika. the badge is called the rainbow badge
volcano badge
6th gym badge
The sixth gym badge (the Marsh badge) is located at Saffron City's gym. It is in Gym Leader Sabrina's possession, so you have to defeat her to obtain it.
You can only get the Sixth Badge from the Sixth gym leader. After defeating the Sixth gym leader, the gym leader will give you the Sixth Badge.
In Pokémon Sapphire, the Gym Badges in order would be Stone Badge being the first one that you get after beating Roxanne, the leader of the Rustboro City Gym. The 2nd Gym Badge will be the Knuckle Badge which you will get after beating Brawly, the Gym Leader of Dewford Town. The third Badge will be the Dynamo Badge which will be given to you if you beat Wattson, the Mauville City Gym Leader. The 4th Badge is the Heat Badge and you will get that once you beat Flannery, the Gym Leader of Lavaridge Town. the 5th Badge you will get will be from your in-game Dad, Norman, the Gym Leader of Petalburg City, Normal will award you the Balance Badge after you beat him. The 6th Badge will come from Winona, the Fortree City Gym Leader, she will give you the Feather Badge. The 7th Badge will come from the Mossdeep City Gym Leaders, Tate and Liza. The 8th Gym Badge is the Rain Badge.
The Coal badge.
Go for the next gym badge.
the seventh gym badge snowpoint gym
yes ash will get his 8th gym badge