Dexter's Laboratory

Dexter's Laboratory (Dexter's Lab for short) is an Annie Award-winning American animated series created by Genndy Tartakovsky about a boy genius named Dexter, who has a secret laboratory hidden behind a bookshelf in his bedroom. His enemy and rival is a boy named Mandark, but he feuds even more often with his older sister Dee Dee, who does not share in his intellectual inheritance.