Some sources cast Dr. D as a male person......and some as a female person....So let's leave that as an open subject for now, and let us just talk about the art:
Dr. D is affiliated with a movement 'of individuals and organisations concerned with how advertising affects society, and how commercial media is shaping our lives' - AKA the Subvertisers’ International. They may be doctors, scientists, parents, teachers, or even you. 'They 'believe in non-violent civil disobedience, campaigning, training and workshops, academic writing, lectures, politics, protest…..and every once in a while a well-humoured prank'. You can include yourself amongst them if you like - it's a free country - apparently!
Sometimes there are Subvert the City days or weeks, producing images often dealing with race, class, gender, and often these interventions are of everyday, well-known graphics and symbols. Doctored by the Dr, familiar London Underground signs take on a new meaning.....