Minus

Ups Sp. Atk if another Pokémon has Plus or Minus.

Game descriptions

Ruby
Sapphire
FireRed
LeafGreen
Emerald
Powers up with PLUS.
Diamond
Pearl
Platinum
Boosts Sp. Atk if another Pokémon has Plus.
HeartGold
SoulSilver
Ups Sp. Atk if another Pokémon has Plus.
Black
White
Black 2
White 2
Ups Sp. Atk if another Pokémon has Plus or Minus.
X
Y
O.Ruby
A.Sapphire
Boosts the Sp. Atk stat if another Pokémon has Plus or Minus.
Sun
Moon
Ultra Sun
Ultra Moon
Boosts the Sp. Atk stat of the Pokémon if an ally with the Plus or Minus Ability is also in battle.
Sword
Shield
B.Diamond
S.Pearl
Boosts the Sp. Atk stat of the Pokémon if an ally with the Plus or Minus Ability is also in battle.

Other languages

EnglishMinus
SpanishMenos
ItalianMeno
Japaneseマイナス (Mainasu)
GermanMinus
FrenchMinus