Half Human (1955)
Half Human, originally released in Japan as Jūjin Yuki Otoko, is a tokusatsu film produced and released by Toho Film Productions Ltd. in 1955. The film was made by Toho's Godzilla production team, consisting of Ishirō Honda, Eiji Tsuburaya, and Tomoyuki Tanaka. This was director Honda's second assignment in the kaiju (or monster) genre, after the original Godzilla (1954).
More at Wikipedia.