By this point in the production of Thunderbirds, in the final months of 1965, the team were on a roll. They were racing towards the finish line on the first 26 episode commission from Lew Grade. The series had been on air for several weeks now and the public were loving every minute of it. The pressure was on to keep the format fresh and the focus of the series was definitely changing based on the demands of the public, and the wishes of the producers. Those changes would become more evident in the next series but they’re certainly starting to creep at this point too. The Cham-Cham continues the trend of pushing the talents of the puppet department to the limit. The nature of the story makes it very clear that the puppet stars were basically expected to behave like human beings now. The Andersons and their team were truly attempting to compete with the likes of James Bond and the ITC live action adventure series with a movement towards more mature storytelling, lavish locations, and character-driven adventures.