Marvel's character Death's Head, who first appeared in Marvel UK's Transformers comic strip, actually met the Seventh Doctor a couple of times, in stories in Doctor Who Magazine, and Death's Head's own series. In one story, the Doctor drops DH off on top of the headquarters of the Fantastic Four in New York! The Merlin character who appeared not too long ago in Paul Cornell's Captain Britain & M.I:15 is intended to be the same person who appeared in one of the early comic strips of DWM. The Doctor and his associates really get around.