HM04 (or Hidden Machine 04) is able to permanently teach a Pokémon a move for use outside of battles. It made its debut in the first generation allowing a Pokémon to learn Strength. In the second, third, fourth and fifth generation games it allows for a Pokémon to learn Strength (as well as in Mystery Dungeon). Image:Pokéball Sprite.png This Pokémon related article is a stub. Please help by expanding it. Image:Pokéball Sprite.png