robert "con" o'neill (born 15 august 1966) is an english actor. he was nominated for a tony award for best actor in a musical and a drama desk award for outstanding actor in a musical for playing michael "mickey" johnstone in the musical "blood brothers". he is known for his role as viktor bryukhanov in the mini-series "chernobyl". o'neill was also in the 2022 dc comics movie "the batman" as a police chief.