*20% chance to poison
Twineedle is an offensive Bug-type move. Twineedle hits the target twice per use.
Each strike has a 20% chance of poisoning the target and a chance to be a critical hit. If the first strike activates the target's Focus Sash or Sturdy, the second one will cause the defending Pokémon to faint. A Focus Band can still activate again to prevent fainting, but this chance is independent of the previous one. If Twineedle breaks a Substitute with its first strike, its second strike will hit the Pokémon behind it.
Pokémon that learn Twineedle
By leveling up
Via a prior evolution