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"No, no, put that down. That is worth more than you or me."
Happy Hogan to Dum-E[src]

Dum-E and U are a pair of hydraulic arm robots Tony Stark used as assistants in his workshop. He made Dum-E in his father's workshop. While Dum-E is generally used to help with Stark's creations, U is used to do the registration of Stark's work using a video camera. Despite Stark's irritation at the robots, they have saved his life on more than one occasion. Dum-E and U helped make some of Stark's armors.



Tony Stark creating Dum-E and U

Tony Stark created Dum-E in his father's workshop, at the age of 16 while he was a student at the MIT, upgrading it with a small A.I. to recognize Stark's voice commands.[2] Dum-E actually is a prize winning robot, just as shown in the Tony Stark Apogee Award's presentation video. Despite his later innovations, Stark kept it over the years.[1]

Mark II

"Good boy."
Tony Stark to Dum-E[src]

Tony Stark having Dum-E and U help him make his second Iron Man Armor

Dum-E and U helped Tony Stark create the Iron Man Armor: Mark II in his workshop, helping with assembling the armor. When Obadiah Stane decided to steal his Arc Reactor, Stark almost died and went to his garage to get the arc reactor on a mantle that Pepper Potts made for him. He was unable to reach it and gave up, but Dum-E gave it to him and saved his life.[1]

The New Element

Tony Stark having Dum-E and U help find a new element for his Arc Rector

Tony Stark used U to serve champagne when he appointed Pepper Potts as his successor and new CEO of Stark Industries. After Stark learned of a new element discovered by his father, he decided to rebuild the element to fix his current arc reactor. Dum-E helped him make the element. Afterward, Stark tasked Dum-E with cleaning up the mess that the new element's creation caused.[3]


Dum-E and U being taken to a new home by Tony Stark

While Tony Stark was testing the Mark XLII, he gave Dum-E a Dunce cap for something it had done. When Tony Stark's Mansion was destroyed, both Dum-E and U were destroyed as well. When Stark returned to the ruins of his destroyed house, he recovered the robots' remains and parts of his workshop.[4]

Moving Day

Dum-E and U helping Happy Hogan move items at Avengers Tower

By 2016, Dum-E had been repaired and helped Happy Hogan and other workers pack various Avengers items and memorabilia from the former Avengers Tower into the Stark Cargo Plane.[5]

New Owner

Dum-E and U helping Peter Parker with his LEGOS

By 2024, Dum-E was in Happy Hogan's possession and was taken to his condominium. Later that summer, Dum-E greeted Peter Parker and May Parker when they took up temporary residence at the condominium due to the high-security features. Dum-E watched as Parker received college application letters. When Parker received his letter from the Massachusetts Institute of Technology, Dum-E was in the process of helping to assemble his LEGO Death Star before accidentally knocking it off the table due to Parker's excitement.

Dum-E and U observed by Norman Osborn

Later that fall, when Parker brought the multiversal displaced people to the condominium, Norman Osborn took an interest in Dum-E while it was powered down. When Parker sensed Osborn's shift into the Green Goblin persona, he webbed his hand to Dum-E.[6]

Alternate Universe Versions

Killmonger's Campaign

This section requires expansion

To be added


The robots were created by a teenage Tony Stark, so whilst they are impressive, they are still quite primitive when compared to Stark's later work. Their capabilities seem to be limited to performing basic tasks, such as holding/moving equipment or operating basic machinery, including fire extinguishers.[7] Dum-E and U also cleaned up Tony Stark's workshop whenever it was in disarray.[8]

It would appear that the very basic A.I built into both robots is capable of understanding anyone, despite being made solely by Tony Stark. Also, Dum-E and U seemingly have emotions, often "reacting" to the people speaking to them. Dum-E especially seems to sulk a lot, as it was frequently scolded by Tony Stark for its often clumsy nature.[9]


  • Dum-E's and U's names are a play on the words "Dummy" and "You" respectively.


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