The Punisher is a comic book character based in what universe?
The Punisher (TV series):  It is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films and other television series of the franchise, and is a spin-off of "Marvel's Daredevil". Marvel Cinematic Universe: The Marvel Cinematic Universe (MCU) is an American media franchise and shared universe that is centered on a series of superhero films, independently produced by Marvel Studios and based on characters that appear in American comic books published by Marvel Comics.
Marvel Cinematic Universe