"The Avengers Earth's Mightiest Heroes #0 Ultron Unlimited Prelude Marvel" is a vintage comic book published by Marvel Comics in 1999. This single issue features artwork by Kurt Busiek, Von Grawbadger, and Stuart Immonen, and is part of the US Comics tradition. Set in the Marvel Universe, this comic is a prelude to the Ultron Unlimited storyline and showcases the Avengers superhero team in action. The colorful pages filled with action, superheroes, adventure, drama, fantasy, and science fiction make it a desirable collectible for fans of the Marvel (MCU) universe.