From Wikipedia, the free encyclopedia. Robert Grubb (b. 31 January 1950, Hobart, Tasmania) is an Australian actor. He studied acting at National Institute of Dramatic Art (NIDA), where he graduated in 1978. Grubb played the role of Dr. Geoffrey Standish in the popular series The Flying Doctors. He starred in the Australian production of the Queen musical, We Will Rock You, playing "Pop". Description above from the Wikipedia article Robert Grubb, licensed under CC-BY-SA, full list of contributors on Wikipedia.​