Denning-Rodger was the control room admin at Pelvanida Research Base that preceded Rudyard Shelton. He held the position for 34 years before interviewing and ultimately hiring Shelton to replace him. (Ask the Characters) Shelton mentally described him as a "decrepit cranky man with no hair except the bushels sprouting out of his nose."
Denning-Rodger threatened to make "the Chinaman in HR" admin if Shelton were late for his appointment. (Shelton on the Job)