Ultron is a powerful robot that is constantly improving. He was built by Henry Pym, but he did not foresee that Ultron would rebel, wanting to conquer and destroy humanity. Already, countless times Ultron has tried to kill his creator, and in one of those attempts he created Vision. The new Ultron, calling himself Ultron Pym, recently spied on the Avengers via the robot Jocasta. Whenever Ultron is stopped, he always returns, in a deadly new form. He was finally destroyed in the Age Of Ultron ( 2013 ) #10.