In 'Blade Runner', what is the name of the protagonist?

In 'Blade Runner', the protagonist is Rick Deckard.

Rick Deckard is a Los Angeles police officer known as a blade runner, a specialist assigned to track down and “retire” replicants—bioengineered beings created for off-world labor. Harrison Ford played Deckard in Ridley Scott's 1982 film, making the character one of science fiction cinema's most recognizable investigators.

Deckard is ordered to pursue a group of Nexus-6 replicants who have returned illegally to Earth. During the investigation, he encounters Roy Batty, Leon, Pris, and Zhora, while also discovering that Rachael, an assistant to Dr. Eldon Tyrell, is herself a replicant. These characters are central to the story, but they are not the protagonist.

A famous point of debate concerns whether Deckard is human or a replicant. Different versions of the film, visual clues, and comments surrounding the sequel 'Blade Runner 2049' encourage competing interpretations. That ambiguity affects the character's identity, but it does not change the answer: Deckard remains the central figure whose investigation reveals the film's questions about memory, empathy, and humanity.