John Constantine

John Constantine () is an antihero who appears in American comic books published by DC Comics. He is the lead character of the comic books "Hellblazer" (1988–2013), "Constantine" (2013–2015), "Constantine: The Hellblazer" (2015–2016), "The Hellblazer" (2016–2018), and "John Constantine: Hellblazer" (2020–2021).
Constantine is a English working-class warlock, detective, and con man from Liverpool.
Constantine's physical appearance was based on the musician Sting.
The "Hellblazer" series was the longest-running and most successful title of DC's Vertigo imprint. IGN ranked him number 29 in its Top 100 Comic Book Heroes. John Constantine made his first live appearance in the 2005 movie "Constantine" played by Keanu Reeves. 
Constantine is known for the fact that some of the people who wrote his stories have claimed to see him apparently showing up in real life even though he is a fictional character.