Pocket Monsters Emerald: Challenge!! Battle Frontier (ポケットモンスターエメラルド 挑戦!!バトルフロンティア Poketto Monsutā Emerarudo: Chōsen!! Batoru Furontia) is a manga series that mixes comedy with Pokémon battling.It began publication in 2005 in CoroCoro Special and has been published into tankōbon.