Also known as: かいじゅうステップ, かいじゅうステップワンダバダ
Ultra Series multimedia project that began in 2018, geared towards infants and younger audiences. Consisting of picture books, a children's manga in Shogakukan's Mebae, children's anime, events, and more, it stars chibi versions of various Ultra Kaiju. Pigmon is the main mascot of the project.