Jon Pertwee, Tom Baker, Peter Davison and Colin Baker, who played the Doctor in Doctor Who (1963) during four consecutive incarnations between them, were each seriously considered for the role of the Dream Maker.
Rufus's dream from the first episode is shown during the closing credits.
The Dream Maker's voice is heard in the Central television company credit at the end of the closing credits in Series 4 and is heard saying "Have a pleasant dream, everyone!"
The closing credits was altered for the 4th and final season. A bubble pop sound effect was added at the end of the closing credits when Rufus's bubble lands on top of the crystal and pops.