Steve Zodiac out of Fireball XL5.
Scott Tracy out of Thunderbirds.
Parker and Lady Penelope out of Thunderbirds.
Melody Angel and Rhapsody Angel out of Captain Scarlet and the Mysterons.
Captain Scarlet out of Captain Scarlet and the Mysterons.
Elsewhere in the museum was this small bust of "Emperor Scarlet".
One of the people who was looking at the Supermarionation exhibition thought was a genuine Roman relic rather than a joke, and that the Captain Scarlet model had been based on him (I think he was actually based on Cary Grant, but could be wrong).
Disappointingly, almost all the puppets on display were replicas. Even the "original" works weren't all that impressive (Scott Tracy's chair is original, but it's original in the sense that it was the very one used to make a Kitkat advert in 1993).
The only puppets that actually were original, as in used in the original TV series, were Melody Angel and Rhapsody Angel. This was something of a silver lining to the cloud, as Rhapsody was one of my favourite characters; if I'd been told in 1967 that I'd one day get to meet her, 7-year-old me would have been thrilled.
The rest of the castle museum had fewer exhibits that it used to have, following its most recent revamp. Maybe it's so that schoolkids don't get bored so quickly, but it felt rather empty to me. If I was taking a visitor around, I'd have to warn them not to get their hopes up first.