Dexter_s Laboratory ｜ Dexter is Average ｜ Cartoon Network

An intelligence test grades Dexter as average, which makes him upset. As a result, he shuts down his lab and tries to live life like a normal kid.Past the vaulted doors lives the smartest boy the world has ever seen, Dexter, boy genius! He's constantly creating dazzling, world-saving inventions in his secret laboratory. His big sister Dee Dee frequently wrecks his experiments. However, he has bigger problems such as his nemesis, Mandark, his brilliant rival at Huber Elementary School. Mom and Dad, of course, have no idea what their little angel is up to.