Effect
In battle
All moves or abilities that would normally increase a stat will decrease it, and ones that would normally decrease a stat will increase it. This also applies to self-inflicted moves, such as Charge Beam, Close Combat and Leaf Storm. This does not include Baton Passed stats.
Outside of battle
Contrary has no effect outside of battle.
Pokémon with ContraryTrivia
For unknown reason, this ability is almost impossible to be fully utilized, as from all Pokemon that can have this ability, only the Snivy line learns a move that makes great use of this ability, which is Leaf Storm (and even then it's just that one move) while both Shuckle and Spinda learns NO move that reduce their own stats, which means this ability is pointless on them (this does not including Superpower which is Spinda's special move in the upcoming Dream World expansion).
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