What is demon in a bottle?

"Demon in a Bottle" is a storyline in the Iron Man comic book series published by Marvel Comics in 1979. Written by David Michelinie and Bob Layton, the storyline deals with Tony Stark struggling with alcoholism.

In the story, Stark's alcoholism becomes progressively worse, leading to reckless behavior and endangering his role as Iron Man. The story examines the consequences of addiction and the toll it takes on Stark's personal and professional life.

"Demon in a Bottle" is considered one of the most iconic Iron Man storylines and has been praised for its realistic depiction of addiction and its impact on a superhero's life. It is often cited as a defining moment in the character of Tony Stark and has had a lasting impact on the Iron Man character in both the comics and in film adaptations.