b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Benton - UNIT Sergeant [Exp.] Basic [Type] PQ [In-joke] 
Though the author does not share the opinion that Benton is sort of dense, the big “SLOWLY” sign in his background may be taken by those who wish it as an indictment of the character.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke