During the ultron agenda arc, ultron returns to earth with plans to merge robots with humans, like how pym got merged with ultron, so that he can make the ultimate lifeform. Age of ultron may have had a robot villain, but director joss whedon wanted to avoid giving ultron an expressionless mask like green goblin. Ultron became sentient and rebelled, hypnotizing pym and brainwashing him into forgetting that ultron had ever existed.
James spader's ultron was recast for a huge marvel cinematic universe project, and its exciting story makes the avengers villain change disappointing. But this isn’t just nostalgia bait—his return reshapes the entire mcu Soon after, ultron led the phalanx (a cybernetic alien species) in an attempt to conquer the universe, but he first conquered the phalanx through sheer force of will
Just when you thought the avengers’ worst nightmare was gone, ultron is back
