An earring and a curly strand of hair... Not making any accusations here haha.

Cyrian (or as he's probably known by the people who can't be bothered to Google search the character, "That guy in the Rani's TARDIS") was a random companion to the Rani in the 30th Anniversary disappointment Dimentia in Time (though it's highly likely that he was actually the Rani in disguise all along).

Only appearing in a single visual adventure and an accompanying short story (both of which have been confirmed as not part of the main timeline), he is easily the most canon character in all of Doctor Who and Eastenders. Waiting for that inevitable Big Finish spinoff, GET HYPE!. oh wait he has been in another show that mean that prince James from Sofia the first is cyrian