Lucie Miller once refered to Gordon as "Flash Gordon". (AUDIO: No More Lies)
Whilst in their spacesuits, Evelyn Smythe called the Doctor "Flash Gordon" and Thomas Brewster "Buck Rogers". (AUDIO: The Feast of Axos)
The Doctor mentioned the Lion-Men of Mongo. (PROSE: Invasion of the Cat-People)
Behind the scenes
- Crusty Cobbe was named after Buster Crabbe who played Flash Gordon and Buck Rogers in serials in the 1930s and the 1940s.