A question about Supermarionation

OP is Go!
I just rented all of Garry and Sylvia Anderson’s Supermarionation titles from Netflix. I noticed that in Fireball Xl-5 they show the puppets walking but in all the other titles they go out of their way to not show them walking. Anybody know why?

I used to joke that if Colonel White ever got out of his chair, the world must be about to end.

The reason is the puppetteers never could find a way to get the puppets to walk convincingly. This is why everyone is always sitting down.

I’ll be revealing how old I am when I say that as a third grader, I could crack up the entire class by walking up to the board like a Fireball XL5 character–“Colonel Steve Zodiac”, I believe.

It looks pretty good to me considering. Guess I’m not very critical.

Or buildings are equipped with moving walkways.