With the body of Arsenal and the power of the Infinity Gauntlet in his possession, Ultron begins his murderous campaign against humanity by taking control of technology from Hammer Industries and A.I.M.. In order to free Arsenal from Ultron's control, Iron Man works on a destroyer malware in order to deactivate Ultron. Iron Man finds out Ultron is at A.I.M base using his Ultron detector, which he does not share with his team. Later he claims he was suspicious and hence he did not share the details. During fight with Ultron, Tony is able to inject Ultron with Destroyer Malware with help of his team mates. Anyhow, he destroys only 95% of Ultron being emotional about Arsenal and Ultron is able to reboot and defeat Tony. This angers Captain America, as Tony did not destroy Ultron as discussed earlier by the team and risked many lives on Earth for his personal emotions on Arsenal. At the end, Captain America leaves the Avengers after an argument with Tony.