b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Betts - UNIT Soldier [Exp.] Basic [Type] Ref [In-joke] 
Named after Doctor Who producer Barry Letts, there is nonetheless a soldier in the source episode (“The Green Death”) with that very name. The pictured soldier isn’t it, however.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke