Rolo Haynes

Rolo Haynes is the main antagonist of the Black Mirror season 4 episode "Black Museum." The owner and curator of the eponymous Black Museum, he has made a business of collecting authentic criminological artefacts from across the world and putting them on display at his tourist trap exhibition. While he first appears to be a quirky but relatively harmess showman, it soon becomes apparent that he occasionally played a direct role in the origins of items he's collected - and that they aren't limited to inanimate objects, either. He was played by Douglas Hodge.

The Pain Junkie
Prior to starting the Black Museum, Rolo Haynes worked at St Juniper's Hospital in downtown New York; not a doctor himself, Haynes was employed as a recruiter by the research department up on the mysterious tenth floor, offering experimentation contracts to potential test subjects on the lower floors, among the ER and other public departments. Haynes most commonly dealt with "the great unwashed," offering improverished patients free healthcare packages on the condition that they occasionally take part in experimental treatments. In this way, St Juniper's was able to perform cutting-edge research without having to abide by the expensive laws binding normal medical experimentation, creating what Haynes himself later described as "the perfect mix of business and healthcare."