Mashin Hero Wataru Gaiden: Entering Makai (魔神英雄伝ワタル外伝 魔界突入物語, Mashin Eiyuuden Wataru Gaiden: Makai Totsunyū Monogatari) is a Japanese comic serialized in the Monthly Coro Coro Comic magazine from editions August 1989 to January 1990.
While featuring new characters and mashins, the story is an alternate retelling of the Shin Mashin Hero Wataru OVA.