Raichu/Pikachu
Ability: Static
Item: Life Orb (Light Ball if Pikachu)
Rash w/ 168 Attack, 168 Sp Attack, 168 Speed, 6 HP
Thunder/Volt Tackle
Brick Break/Focus Blast
Grass Knot/Iron Tail
HP (Dark/Fire/Ghost/Flying/Rock)
Partners:
Soak-users
Rain Dance-users if Thunder is used.
Discharge-users if Lightningrod is used.
Countering:
Ground-types with high Attack and Sp Defense like Garchomp, Gliscor, Swampert, and Flygon.
Cell Battery-holders with Earthquake like Carracosta, Blastoise, Poliwrath, Gyarados, and Sharpedo.
Quick Feet/Guts-users
Limber-users
Marowak's Bonemerang & Krookodile
Iron Ball-holders with item-switching moves like:
Seviper/Arbok with Switharoo & Earthquake/Bulldoze
Grumpig with Trick & Bulldoze
Tropius with Bestow & Earthquake
Plusle/Minun
Item: Wise Specs
Modest w/ 252 Sp Attack, 130 HP, 128 Speed
Thunder
Entrainment
HP (Fire/Fighting)
Grass Knot/Signal Beam
Partners:
Soak-users
Plus-users like Plusle, Klinklang, and Ampharos.
Minus-users like Minun, Klinklang, and Manectric.
Rain Dance-users if Thunder is used.
Countering: Same as Raichu/Pikachu.
Pachirisu
Ability: Volt Absorb
Item: Muscle Band/Life Orb
Brave/Naughty w/ 168 Attack, 168 Sp Attack, 168 Speed, 6 HP
Thunder
Super Fang
Rollout/Bite
Seed Bomb/U-Turn/Gunk Shot
Partners:
Soak-users
Rain Dance-users if Thunder is used.
Discharge-users
Countering: Same as Raichu/Pikachu.
Emolga
Ability: Static
Item: Flying Gem (if Acrobatics)/Life Orb
Brave/Naughty w/ 168 Attack, 168 Sp Attack, 168 Speed, 6 HP
Thunder
Acrobatics/Air Slash/Aerial Ace
U-Turn/Signal Beam
HP (Fighting)
Partners:
Soak-users
Rain Dance-users
Discharge-users if Motor Drive is used.
Countering:
High Attack and Sp Defense, and uses Rock or Ice-type moves like Stone Edge, Smack Down, Rock Wrecker, Rock Slide, and Icicle Crash. Those includes Dragonite, Tyranitar, Swampert, Garchomp, Hydregion, Metagross, Electivire, Gliscor, Flygon, and Haxorus.
Cell Battery-holders using those moves above like Aerodactyl, Gyarados, Kabutops, Carracosta w/ Solid Rock, Walrein, Simipour, Braviary.
Guts/Quick Feet-users
Limber-users
Gravity-users
Iron Ball-holders with item-switching moves like:
Seviper/Arbok with Switharoo & Earthquake/Bulldoze
Grumpig with Trick & Bulldoze