Robot

 Origin

Robot is first thought to be nothing more than a robot with advanced artificial intelligence who leads the Teen Team. As it turns out Robot is really just a machine controlled by the mind of genius Rudy Conners.  Rudy was physically unable to live outside of a specially built pod because the air would burn his skin, so he created Robot to live vicariously through. Rudy now exists outside his tube as a clone of Rex Splode, and still controls robot with his mind. There are multiple version of the Robot automation used for different situation.  

Creation

 In Invincible Ultimate Collection #1 Robert Kirkman says 
 

Robot was all Corey [Walker's] idea... I really just came up with the know-it-all personality to go with the design.

 

Major Story Arcs

 Teen Team

Robot was a member of the Teen Team, who helped Invincible defeat one of the Mauler twins. Now much was known about him, other than the fact that he had vast intelligence and some fighting skill. Robot later wiped the Mauler twin's memory and used him to lead himself, Atom Eve and Invincible to the twins' lair, where they apprehended the Mauler twins. Later, Robot was investigating a series of mall bombings and discovered the identity of the bomber, sending Mark and Eve to take down Mr. Hiles, their physics teacher.  

Guardians of the Globe

  
 With the death of the Guardians of the Globe at the hands of Omni-man, Robot was appointed leader of a new team by Cecil Stedman and told to hold trials for new members. The new team was chosen and the new Guardians were underway. Eventually, it became apparent that Robot had feelings for Monster Girl and tried his best to fix her problem. Once Black Samson was put into a coma by Battle Beast, Robot decided that Monster Girl would use his old suit rather than transforming. After an invasion attempt that the Guardians failed to thwart, Cecil removed Robot from the leadership position and offered it to the Immortal, also bringing Bulletproof into the team. 

Around this time, Rudy secretly used his Robot to take a DNA sample from Rex-Splode, having seen how Monster Girl was attracted by his appearance. He enlisted the help of the Mauler twins to help implant his mind into the clone, which was engineered to be younger than Rex, but in the end Rudy ended up as two beings, one mind in the Rex clone and another in the original body. Rudy allowed his original body to die and promptly turned on the Maulers, using his Robot constructs to take them down. By this time Monster Girl had accidentally destroyed Samson's suit and Rudy revealed his true identity to his team. Amanda was pleased that she would finally have someone to hang out with in her down-time, without getting any weird looks, now that Rudy also looked like a kid. 
 
The two went to see movies and went on dates and eventually became very close. They both remained active members of the Guardians of the Globe and Robot continued to try and find a cure for Amanda. They were both chosen to go into space and attempt to stop the sequid invasion, where Robot was a key player and found a way to disrupt the mental link the sequids shared. He then created a device to separate them from their host, Rus Livingston, allowing the Guardians to bring him safely back to Earth.  
 

Post Guardians 

 
After Cecil turned against Invincible, Robot was one of the Guardians to help their friend and leave the government-sanctioned Guardians of the Globe. Along with Monster Girl, Rex-Splode and Bulletproof, Robot set up shop in the old Teen Team base. During that time, Invincible found a device that was monitoring his family and brought it to Robot for analysis, after it self-destructed. The technology was extremely advanced, almost other-wordly, and Rudy was unable to determine who was monitoring Invincible. However, he did make a breakthrough with Monster Girl's condition, creating a belt which would take a copy of her cell structure before transforming and return her back to exactly the way she was when she transformed back. 
 

Recently

  
Robot had followed the Flaxans through the portal to their own dimension in hopes of defeating them for good. He has not been heard from since. 
 

Other Media

 

Motion Comic

 
Robot is voiced by Stan Kirsch in the motion comic of Invincible.