What is Ultron?
[[File:Cosplay Ultron Dragon Con 2013.jpg|thumb|Cosplayer as the character.]] '''Ultron''' is a supervillain appearing in American comic books published by [[Marvel Comics]], most commonly serving as one of the main antagonists of the ''[[Avengers]]'' franchise, the main antagonist of the ''[[Ant-Man]]'' series, the overarching antagonist of ''[[Wasp (Marvel Comics)|The Wasp]]'' series, and a major antagonist in the ''[[Iron Man]]'' franchise. He has also served as the titular main antagonist of many Marvel storylines, such as ''Ultron Unlimited'', ''Age of Ultron'' and more. Created by writer [[Roy Thomas]] and artist [[John Buscema]], the character first appeared as an unnamed character in ''The Avengers'' #54 (July 1968), with his first full appearance in ''The Avengers'' #55 (August 1968). == Fictional character biography == He is a highly delusional [[robot]], who is bent on destroying humanity, in order to replace humans with machines. First appearing in Avengers #54, he has become most recognizable as being one of, otherwise the most common arch-nemesis of the [[Avengers]], mainly his own creator, [[Hank Pym]] the first '''[[Ant-Man]]''', as well as [[Vision (Marvel Comics)|Vision]]. He has also been an adversary to the [[Guardians of the Galaxy (2008 team)|Guardians of the Galaxy]] and [[Adam Warlock]], making him a galactic threat. == In other media == Debuting in the Silver Age of Comic Books, Ultron has since featured in Marvel products across different media, such as animated television series and video games. [[Tom Kane]] and [[Jim Meskimen]] are among the actors that have portrayed the character via voice acting. In the [[Marvel Cinematic Universe]] (MCU), [[James Spader]] portrayed Ultron in his first live-action appearance in the [[Marvel Studios]] movie ''[[Avengers: Age of Ultron]]'' (2015), while [[Ross Marquand]] voiced alternate universe versions in the [[Disney+]] animated series ''[[What If...?]]'' (2021) and the movie ''[[Doctor Strange in the Multiverse of Madness]]'' (2022). [[Categor