Boom is BlueYoshter's pet Togetic. She goes around carrying a Shiny Stone but for some reason doesn't use it to evolve. She is BY's first Flying-type Pokemon. She normally gets along with everyone, including BlueYoshter's enemies. Her name comes from the reason that when she uses Metronome, SelfDestruct or Explosion are usually chosen randomly. She can use Headbutt, Metronome, Charm and Swift. Boom looks like a Togetic with blue and green rings.

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