Radbug was, along with Muzgash and Lagduf, one of the last survivors of the internal fight between Mordor-Orcs and Morgûl-Orcs at Cirith Ungol.He refused to follow the orders of his Captain Shagrat during Gorbag´s rebellion and got his eyes squeezed out for it.
Radbug, Muzgash and Lagduf
Movie Trilogy
In the Movies the last surviving Orcs of Cirith Ungol were deafeated by Sam Gamgee.