There are many different version of Sir Didymus. From what I've been able to gather, several toy companies made demonstration versions of Sir Didymus in order to win the bid for licensing from Henson Company. Dakin made the official dolls, but other companies, namely Kenner, made prototypes in different color combinations, and attached labels from other toys, such as "Care Bears." I've seen at least five different Sir Didymus dolls, and possibly two different Ludos (one appears to be pink fur rather than the appropriate brown, but that could be to poor photos. The Firey has Velco limbs so they can be removed, just the the Fireys from the film!