Dum-E and U

Dum-E is a robot Tony Stark made in his father's workshop. It has helped him and failed him in the past. It has even saved his life, yet Tony constantly gets angry at the robot. Dum-E has helped make some of Tony's armors.

Creation
created Dum-E in his father, Howard's workshop. The robot seemed to be of some use so Tony kept it.

Iron Man
When Tony was becoming Iron Man, Dum-E helped him make his suits, including the Mark II and Mark III. When Obadiah Stane descided to steel Tony's arc reactor, Tony 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, which save tony's life.

The New Element
After Tony learned of a new element discovered by his father, he descided to rebild the element to fix his current arc reactor. Dum-E helped him make the element.

Mark XLII
While Tony was testing the Mark XLII, he gave Dum-E dunce hat for something it had done.

When Tony's house was destroyed, Dum-E was destroyed as well. When Tony returned to the ruins of his house took the remains of Dum-E and parts of his workshop.