hadrian blackwater Share definition Flag A character from the 6 part series “The Riyria Revelations”. An absolute himbo whos hilarious. A great friend. Supportive and kind. Selfless but not without selfish actions. “That guys so nice and funny!! Must be a Hadrian Blackwater.” hadrian blackwater by Riyriaaa July 15, 2022 Get the hadrian blackwater mug.