Queen of Hearts

Like the King of Hearts, the Queen of Hearts was one of the deadly pawns used by the Celestial Toymaker against Steven Taylor and Dodo Chaplet when they were trapped in his realm. (DW: The Celestial Toymaker)

At one point the Queen said: "We were not amused". (DW: The Celestial Toymaker) This was a thing that Rose Tyler tried to get Queen Victoria to say. (DW: Tooth and Claw)

Behind the scenes
The Queen of Hearts resembled the playing card character of the same name.