Eevee was introduced in the Pokémon games in 1996 and became one of the franchise's most popular characters because of its many evolutions. Its cries in games like Pokémon Sword and Shield are short synthesized vocalizations performed for each creature, and Eevee's happy variant is among the most shared. Clips of the sound spread through gaming videos, soundboards and fan edits, where its cheerful tone made it a go-to audio cue for cute or positive Pokémon moments long after the games released.