Ken Utsui (宇津井 健 was a Japanese actor. He is perhaps best recognized for his portayal of Utsui Ken)Super Giant in the Super Giant series. Utsui passed away on March 14, 2014, at the age of 82 due to chronic respiratory failure.
- Super Giant (1957) as Super Giant
- Super Giant Continues (1957) as Super Giant
- Super Giant: The Mysterious Spacemen's Demonic Castle (1957) as Super Giant
- Super Giant: Earth on the Verge of Destruction (1957) as Super Giant
- Super Giant: The Artificial Satellite and the Destruction of Humanity (1957) as Super Giant
- Super Giant: The Spaceship and the Clash of the Artificial Satellite (1958) as Super Giant
- Super Giant: The Space Mutant Appears (1958) as Super Giant
- Super Giant Continues: The Devil's Incarnation (1959) as Super Giant
- Super Giant Continues: The Poison Moth Kingdom (1959) as Super Giant
- Giant Horde Beast Nezura (unproduced, 1964)
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