Arno Stark and his brother Tony were engaged in a never-ending competition, caused by their father Howard's failed attempt at establishing a friendly rivalry to promote affection.[1]

Like the rest of the inhabitants of Technopolis, Arno was forced to live his life encased in a high-tech suit of armor to protect his body after Howard secretly released an airborne disease as part of a secret marketing ploy to make people buy his life-support armors, and the pathogen proved to be more virulent than expected, affecting every citizen instead of a small portion as originally planned.

Tony eventually succeeded Howard as the Baron of Technopolis, and Arno became his main rival in the business of providing the domain with life and mobility. Arno was basically untouchable, as Tony promised Howard to allow Arno free market in the city as long as he didn't break any laws. Even though Arno constantly opposed Tony, and even provided technology for criminals, Tony had not been able to prove his brother's illicit activities, and opposed the idea to use his power as Baron to get rid of Arno. Among the people Arno had business with was the Kingpin of crime.[1]

After Tony tried to acquire Kiri Oshiro's Mobairu Yōsai Mechaniks, Arno sent a spy to infiltrate Kiri's building in hopes to find the technological advancements she was working on, that could allow him to have the upper hand against his brother.[2] After discovering Arno's attempt on Kiri, Tony confronted him in his headquarters. While Tony blasted Arno out of his building, the two brothers engaged in a civil and friendly conversation.[3] Tony reassured that it was important for Kiri to stay alive, as her technology could be relevant to keeping Howard's secret.[4]

Tony and Arno made a temporary alliance after the Thor of Technopolis and Grand Marshal Jim Rhodes started investigating Spyder-Man's murder and discovered the truth. While Arno kept the War Machine Deputies neutralized, Tony killed Rhodes. However, the truth still got out because Rhodes had been transmitting his confrontation with Tony to his niece Lila, who was friends with Kiri. Kiri and Lila decided to stop the Stark brothers once and for all, and deployed two giant mechas to confront them.[5]

A battle of gigantic proportions took place in the streets of Technopolis between the Stark brothers and Kiri and Lila. While Stark revealed the truth to Kiri, she had been using the fight as a misdirection to distract the Starks from a virus she had entered into their suits, and ultimately shut them down. Some time later, the Thor Corps arrived to the scene to take care of the Stark brothers, and dispatched them in the name of Doom.[4]


Seemingly those of the Arno Stark of Earth-616.


Iron Man Armor

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