Monster a Go-Go (1965)

American astronaut Frank Douglas mysteriously disappears from his spacecraft as it parachutes to Earth. He is apparently replaced by or turned into a large, radioactive, humanoid monster. A team of scientists and military men attempt to capture the monster.
Herschell Gordon Lewis, Bill Rebane
Henry Hite, Phil Morton, Lois Brooks, Rork Stevens, Robert Simons, Peter M. Thompson, June Travis, George Perry, Aviva Crane, Stu Taylor, Barry Hopkins, Del Clark, Art Scott, Leonard Holstein, Dean Tompis, Jim Bassler, Rick Paul, Lorri Perry, Bill Rebane
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