When a Pokémon with this ability takes a critical hit, its attack increases to its maximum level. In Generation IV, Anger Point would activate with Substitute in affect, however, beginning with Generation V, this was changed to where Substitute would keep Anger Point from activating.
Pokémon with Anger Point
As a natural ability
|If any of the Pokémon were introduced before the generation that Anger Point was introduced in, then they will not have it as a natural ability until then.|
|Hidden abilities were not introduced until Generation V, so if any of the Pokémon were introduced before that, then they will not have Anger Point as a hidden ability until then.|