Before entering the Mauville Gym, the player is forced to battle Wally in front of it.
Generation III
The Gym is filled with electrical barriers designed by Wattson himself. The barriers can be turned on and off by stepping onto switches across the floor. After the Gym Leader has been defeated, the barriers will be turned off permanently.
The Gym's electrical barriers now come in blue and red varieties, with color-coded switches. Stepping on a switch shifts the direction the like-colored barriers project from vertical to horizontal and vice-versa. The Gym has also been divided into two different floors. Just like in Generation III, the barriers are turned off once the Gym Leader has been beaten.
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.
The Mauville Gym has appeared in two episodes of the anime.
It first appeared in Watt's with Wattson?. Ash and his friends reached the Gym, where the young Pokémon Trainer challenged Wattson for a Gym battle. However, they were lost, as there were many traps, like falling into a whirlpool. After going through the traps, Ash challenged Wattson and won flawlessly, stunning the Leader and making him question his abilities. He finally realized that Pikachu had been supercharged by one of Wattson's Raikou robots. After realizing what happened, Wattson told Ash to keep the Badge and not to worry about challenging him again.
But when Ash and the others returned to Mauville in Manectric Charge, Ash decided to challenge Wattson again, this time with his newly-captured Torkoal. This time, Wattson defeated the Fire type with his Manectric.
In addition to Wattson, the Gym assistant Watt also makes his home at the Gym. He appeared to be interested in May, and gave her advice on the Pokémon Contest in Verdanturf Town.
Magnemite was the first Pokémon used by Wattson in his Gym battle against Ash. Due to Pikachu being powered-up by the exploding mecha-Raikou, it was defeated with only a single Thunderbolt.
Magnemite has worked with Wattson for a number of years, during which Wattson and Magnemite overcame Magnemite's struggle to master Thunder Wave.
Magneton was the final Pokémon used Wattson during the Gym battle. By this point in the match, both Wattson and Magneton were determined to defeat Ash, but Magneton couldn't stand up to Pikachu's super-charged Thunder and was also knocked out in a single hit.
Manectric first appeared as an Electrike after Wattson's defeat by Ash. After cheering Wattson up, it sent Team Rocket blasting off together with Ash's Pikachu. After this, it stayed with Wattson.
It was seen again when the gang returned to Mauville City. Electrike evolved into Manectric after defeating Team Rocket. Ash decided to challenge Wattson and Manectric to a training match with his Torkoal. After a fierce battle, Manectric emerged victorious.