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Gym: A boxing ring raised up off the ground in the middle of an intricate maze. It has golden ropes for its walls and a bouncy floor that gives a 1.5x speed boost to fighting types.
The maze is filled with Blackbelts that each carry 1 Fighting, 1 Dark and 1 Rock type Pokemon to stop people bursting through with Psychic/Flying types.
There's three passage ways blocked by an old man next to a punching bag, which you must destroy with a Pokemon move before progressing. Each bag is coated in a different material to make it weak to certain moves.
Gym leader looks like pic related and has
the following Pokemon
1. Hitmonlee - Partner Pokemon was a Tyrogue
2. Throh - Caught in Unova during training trip.
3. Infernape - Originally a Chimchar from Sinnoh where he started his journey.
4- Mega-Medicham - His strongest Pokemon and the highest level. Caught originally in the Bell Tower in Ecruteak City.