Phineas Mason was a brilliant scientist and engineer skilled in invention. When he was middle-aged, he had a repair shop named Phineas' Fix-It. One evening while closing his business, he came across a confused fleeing Doombot. Phineas took pity in the robot and adopted him. After using the Doombot as an assistant for years, Mason grafted an artificial membrane with the appearance of human skin onto the robot's surface to help it blend in society, with the Doombot later adopting the name of Vincent Doonan, to be known as the Terrible Tinkerer.
Credit: marvel.fandom.com
Key Issues & Appearances
1
Significant comic book appearances featuring Tinkerer
