What are the eight gym badges called?

It really depends on the type of game that you have. If you have Ruby/Sapphire/Emerald, You must get the Eight Gym Badges of Hoenn. If you have Diamond/Pearl/Platinum, you will receive the Eight Gym Badges of Sinnoh. If you want HeartGold/SoulSilver/Gold/Silver/Crystal, you will get the Eight Gym Badges of Johto AND Kanto. If you have FireRed/LeafGreen/Red/Blue/Green (Japan Only)/Yellow (Pikachu Version), you will ONLY receive the Eight Gym Badges of KANTO.