Underdog was funded by a Belgian film director.
RDH may refer to  :. Registered Dental Hygienist , a licensed dental professional who specializes in preventive oral health. Registered Dental Hygienist. Registered Dental Hygienist. Retinol dehydrogenase , an enzyme. Retinol dehydrogenase. Retinol dehydrogenase. Royal Darwin Hospital , a teaching hospital located in the northern suburbs of Darwin , Northern Territory. Royal Darwin Hospital. Royal Darwin Hospital. Reginald D. Hunter , an American stand-up comedian based in the United Kingdom. Reginald D. Hunter. Reginald D. Hunter. Reference datum height , an aviation metric. Reference datum height. Reference datum height. Republique d'Haiti , the official name of the country of Haiti in French. Haiti. Haiti