Some time after his construction, he worked as a stockboy for several organic owners 24 hours a day. This and being ordered around harshly made him resent "organics" as he calls them. Later in his life, he would live on the "Planet of the Lost" where he constructed his robotic shriekers and hatched a plan to strand organics on the planet. He had his shriekers attack passing ships, causing them to crash on the planet below. Once stranded without means of escape, Flint tricked them that he was the first person who fought them and he became their leader. This enabled him to order organics around, and make them do the work, which he felt was justifible retribution for what the organics had put him through.
After 42 crashed on the planet, Team Lightyear promised the villagers they would be rescued, prompting Flint to call in the shriekers and have them attack the settlement. He blamed the attack on the presence of XR, a robot, as the shriekers supposedly hate technology. He then used this to banish Team Lightyear from the settlement.
Flint revealed as a robot.
They later discovered that the shriekers were robots, so Flint tried kill them to prevent them from getting this information ot the settlers. However, while he was fighting Buzz, the manufacturing plant blew up, drawing the settlers to check it out. When they arrived, they learned the truth, forcing the crazed android to reprogram the shriekers to attack organic life. However, they were defeated when Mira got XR working again and sent out a jamming signal and Flint was defeated when Buzz beat him in the fight.