Medabots (2001)

Children's animated series set in the year 2122 A.D., when every kid owns a high-performance Medabot, a pet robot with artificial intelligence and strength controlled exclusively by its owner. Children compete with each other in "Robattles" that pit Medabots against each other in a designated ring. The series focuses on the adventures of Ikki, a poor boy who dreams of owning a Medabot and competing. Ikki finds a "medal," the hardware of a Medabot's brain and decides to purchase a Medabee, an inexpensive Medabot in which he inserts the "medal." To his surprise, the component gives his Medabee super robotic strength, catapulting the two to the front lines of Robattle competition.