Image bundle of anime-style monsters also known as “Mon”
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'Collectible monsters' are very popular genre in Japan, starting with “Capsule Monsters” from Ultraman in the 60s, and other series and franchises such as Pachimon, Bikkuriman, Pokémon, Yu Gi Oh, Duel Masters, Beyblade, Bakugan, Yokai Watch, Digimon, Monster Rancher, Spider Riders, Spectrobes, and more recently, the branch game from Pokémon, 'Pokémon GO'.
Similar trends in America in earlier years would be “Monster in My pocke