Benjamin Richter

 is a fictional serial killer and one of the main antagonists featured in season nine of the FX Network television series American Horror Story, subtitled "1984". He was played by actor John Carroll Lynch.

Biography
Benjamin Richter was an American soldier who served in Vietnam during the late 1960s. He proved to extremely efficient at killing, and demonstrated a perverse joy in his duties - so much so, that he was given a dishonorable discharge.

Back in the states, Richter found employment working as a janitor at Camp Redwood in California. Those near him were always alerted to his presence by the jangling of his key ring, earning him the nickname Mr. Jingles.

In 1970, Benjamin Richter suffered a psychotic break, and went on a killing spree at the campground, killing nine people before finally being apprehended. After murdering a camp counselor, he would sever one of their ears as a souvenir. One of Richter's would-be victims was Margaret Booth, who miraculously survived Richter's assault, though she did lose an ear in the process. Booth became the star witness at Richter's trial that sent him to a mental health institution to spend the rest of his days.