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Sonic Boom (Japanese: ソニックブーム Sonic Boom), formatted as SonicBoom prior to Pokémon X and Y, is a damage-dealing Normal-type move introduced in Generation I.
SonicBoom always inflicts exactly 20 damage if it hits. It has no secondary effects and does not take weaknesses or resistances into account. SonicBoom can affect Ghost-type Pokémon.
SonicBoom no longer ignores type immunity, but still ignores type weaknesses and resistances.
In Red and Blue Rescue Team, this move does 55 damage, while in Explorers of Time, Darkness, and Sky it does 20 damage.