Not known for certain. But given his age at the time of the production, the great size the suit would need to be as a practical effect, and the cost of insuring actors or stuntmen, this is extremely unlikely.
After peaceful aliens invade Earth, humanity finds itself living in a utopia under the indirect rule of the aliens, but does this utopia come at a price?
Who are the characters in Childhood's End?
Driver's Son, Jake Greggson, Karellen, Ricky Stormgren, Sheriff De Bont, and Tommy
What genre is Childhood's End?
Drama, Sci-Fi, and Thriller
How many awards has Childhood's End been nominated for?