When a Pokémon with this Ability is hit by a move that makes contact, there is a 30% chance that the attacking Pokémon will become paralyzed. This can affect Ground-type Pokémon.
If a Pokémon with this Ability is hit by a multi-strike move that makes contact, each hit has an independent chance to activate this Ability.
Outside of battle
From Pokémon Emerald onward, if a Pokémon with Static is in the first place in the party (even if fainted), then there is a 50% chance the game will force an encounter with an Electric-type Pokémon, if one is possible.
May inflict the Paralysis status condition on an attacker when the Pokémon is hit by a direct attack.* When the Pokémon is hit with a direct attack like Tackle or Scratch, the attacker is sometimes afflicted with the Paralysis status condition!*