Who is the leader in INGSOC?

The leader of INGSOC, the totalitarian regime in George Orwell's novel "1984," is Big Brother. He is depicted as an omnipresent figure representing the Party's authority and control over society. Although it is unclear whether Big Brother is a real person or a symbolic figure, he embodies the principles of surveillance, Propaganda, and oppression that define the regime. His image serves to instill fear and loyalty among the citizens of Oceania.