Jiro Osamu was the Batman of Japan. An agent of Batman Incorporated, Jiro was known to have previously served under Mr. Unknown.
Working as the body double for Mr. Unknown, Jiro helped the Batman take down Lord Death Man and was thus granted the position of Batman for Japan. Ending up in a relationship with fellow superhero Lolita Kanary, later Kanaria, Jiro solved many cases and defeated many Japanese supervillains. Jiro also helped out in the Battle of Gotham City. After establishing a secondary base in Hong Kong, Jiro helped Batman against the Ghost Dragons.