Insectoid species (Card Conundrum)
From Tardis Wiki, the free Doctor Who reference
An insectiod species resembling playing cards once captured the Doctor's TARDIS.
In order to retrieve it, the Second Doctor, Ben, Jamie and Polly captured 13 of these creatures, and had to choose one of them. Upon choosing one marked with the letter Q, the Doctor was told he had "chose't good't". (COMIC: Card Conundrum)