In addition to Robert Downey Jr. and Mark Ruffalo, The Avengers: Age of Ultron also stars Chris Evans, Chris Hemsworth, Samuel L. Jackson, …

Ultron wished to become more human and inhabit a human body. Ultron-7 was a gargantuan construct, while Ultron-8 created a robotic “wife,” Jocasta by transferring the consciousness of his “mother” Janet van Dyne into a robot body.

So this theory starts out like this, Hank Pymm actually created Ultron in the comics, but Ultron was created by Stark in the movies. J.A.R.V.I.S. Ultron is an artificially intelligent robot and in the comics, he’s created by scientist Hank Pym (the first Ant-Man who will be played by Michael Douglas in next year's Ant-Man movie).In the Marvel Cinematic Universe however, it’s Tony Stark who creates Ultron instead and the Phase 2 movies have been building towards this. Ultron (Marvel), Ultron (Avengers: Earth's Mightiest Heroes), Ultron (Next Avengers: Heroes of Tomorrow), Ultron (2010 Marvel Animated Universe), Ultron (Marvel Cinematic Universe), Ultron Sentinels, Ultron Sigma No. Originally created by writer Roy Thomas and artist John Buscema in 1968, Ultron was designed by Pym to be an artificial intelligence, created for the betterment of … Vision was an android who possessed a synthetic body made from vibranium created by Ultron with Helen Cho's help, using the powerful artifact known as the Mind Stone to bring Vision to life. in creating the android. Vision was built by Ultron but brought to life by the efforts of Ultron, Tony Stark, Bruce Banner, and Thor. Originally conceived as the perfect form for Ultron, the body was taken by the Avengers before Tony Stark and Bruce Banner proceeded to upload the remnants of Stark's personal A.I. Well I say Stark shouldn't take credit for work actually done by Hank Pymm. Even though Michael Douglas was cast as Hank Pym in Ant-Man (2015) and his character is essential in a lot of Ultron storylines in the comics, Joss Whedon stated in an interview at the San Diego Comic-Con 2013 that he would not be featured in this film to avoid introducing a third scientist as he already had Stark and Banner. Ultron has been confirmed to be the main villain of Marvel vs Capcom Infinite with Sigma and will also fuse with him to create a new form Ultron Sigma. His metal shell is made from Adamantium, the same metal that Wolverine's skeleton and claws are covered with. In the movie Stark and Banner are desperately trying to create Ultron to no avail in under the three day timeline they requested from Thor. Director Joss Whedon has revealed that the Avengers: Age of Ultron Vision will be created by Ultron and will use J.A.R.V.I.S. The Avengers interrupted the transfer so Jocasta only retained elements of Janet’s psyche. Ultron was created by Roy Thomas and John Buscema and first appeared in Avengers #54.

[Update: Tony Stark is involved in the creation of Ultron.Details here.]. Created by Henry Pym to be a technological landmark, Ultron soon intellectually surpassed his "father" and eventually fought the Avengers after organizing the Masters of Evil.

Roy Thomas is actually a comic book writer who co-created and updated several characters in his run, with one of them being Ultron Wakanda: Although it is only mentioned once by Bruce Banner, Wakanda is a fictional nation in South Africa, home to the Black Panther, Prince T'Challa. The creation gone awry, the sentient robot Ultron hates and seeks to wipe out humanity.