Ability · Gen 3 · 9 Pokémon
Plus
If an active ally has this Ability or the Minus Ability, this Pokemon's Sp. Atk is 1.5×.
If an active ally has this Ability or the Minus Ability, this Pokemon's Special Attack is multiplied by 1.5.
Plus was introduced in Generation 3. 9 Pokémon and forms can have it (4 as a hidden ability).
Best Pokémon with Plus
Ranked by usage in public Pokémon Showdown battles (Champions VGC first, then National Dex OU, SV OU and Champions Singles), with how many of each Pokémon's sets actually run Plus.
Pokémon with Plus
As a regular ability (5)
As a hidden ability (4)
Plus FAQ
What does Plus do?
If an active ally has this Ability or the Minus Ability, this Pokemon's Special Attack is multiplied by 1.5.
Which Pokémon have Plus?
9 Pokémon and forms can have Plus, 4 of them only as a hidden ability: Mareep, Flaaffy, Ampharos, Plusle, Klink, Klang, Klinklang and Dedenne and more.
Is Plus a hidden ability?
It depends on the Pokémon. Mareep, Flaaffy, Ampharos and Dedenne have it as a hidden ability, while Plusle, Klink, Klang, Klinklang and Toxtricity can have it as a regular ability.
What are the best Pokémon with Plus?
By competitive usage, the most used Pokémon that can have Plus are Toxtricity (#91 in Champions VGC) and Dedenne (#220 in Champions Singles).
Effect text from Pokémon Showdown (MIT); which Pokémon have it from Showdown's Pokédex, cross-checked against PokéAPI. Unofficial fan site.