Contrary

https://vignette.wikia.nocookie.net/pmysteryuniverse/images/a/a4/Contrary.png/revision/latest?cb=20190905043421&format=original is an Ability that reverses all of the Pokémon's stat changes.

Effect
Whenever the Pokémon's stats change, the changes are negated. Any positive stat changes become negative and vice versa.

Pokémon with

 * Shuckle
 * Spinda
 * Snivy
 * Servine
 * Serperior
 * Inkay
 * Malamar
 * Fomantis
 * Lurantis