Electrike, Manectrike, Plusle, Minun, Pichu, Pikachu, Raichu, Magnemite, Magneton, Voltrob, Manectrode, etc.
Mauville
He uses electric Pokemon. His Pokemon differ between "ruby and sapphire" and "emerald".
Wattson the electric gym.
Electrike can
well i have ruby and sapphire and slugma is in that cave near the electric city
In Pokemon ruby, the first electric gym is wattson's gym, it is the third badge you obtain in the game. A good strategy to beat him is to bring along a ground type, or a fire type since he uses a Pokemon called magneton, which is Electric/Steel.
Watson is in the Mauville City gym. To get to him, you must finish an electric puzzle and defeat a few trainers. He uses electric type Pokemon.
some good electric Pokemon catches in RUBY/SAPPHIRE would be electrode, manectric and magneton (Electrode and Magneton are rare but Manectric is Uncommon) there is also voltorb, pikachu, magnemite, chinchou, lanturn e.t.c
Water-type Pokemon are weak against Grass and Electric-type moves.
There are a few electric type Pokemon you can get in ruby and sapphire and emerald like Electrike you can find a lot of them in New Mauville you can find Magnemite and Voltorb. Other electric types you can get are Pikachu, Mareep.
Ground type. They cannot be affected by electric-type moves.
Pokemon ruby's version IS Pokemon ruby.