Human Vapor, The (1960)

aka’s: Gasu Ningen Dai Ichigo/The First Gas Human/ガス人間第一号

A librarian (Yoshio Tsuchiya) is subject to a scientific experiment which goes wrong and transforms him into “The Human Vapor.” He uses his new ability to rob banks to fund the career of his girlfriend (Kaoru Yachigusa), a beautiful dancer. He soon becomes Tokyo’s most wanted criminal. Also stars Tatsuya Mihashi.