Charjabug is Pokémon number 737, introduced in Pokémon Sun and Moon in 2016 as part of Generation VII. It is the evolved form of Grubbin and later evolves into Vikavolt, found in the Alola region. Like other Pokémon cries, its call was created as a short in-game sound that plays when the creature appears in battle or in the Pokédex. Clips of individual cries later spread through wikis, videos and soundboards, where collectors use them to identify species, complete Pokédex projects and add authentic game audio to fan content.