By all appearances, Dexter is your typical boy. Your typical pointy-boot wearing, lab-coat sporting, European-sounding three-foot-tall boy. But when it comes to science, he is a genius. Dexter's biggest challenge, however, is keeping his meddling sister Dee Dee from interfering with his next great invention.

Dee Dee is Dexter's big sister and his biggest nuisance when it comes to the pursuit of scientific discovery. Dee Dee embraces everything whirly, twirly and girly in the world. She is a catalyst for chaos, dancing and prancing through the lab. More often than not, Dexter wishes she'd make like an atom and split.

Dexter's sworn enemy proves that when it comes to competition, science isn't always fair.

Dexter's happy homemaker mom has no idea her son has a secret working laboratory in the house. Often times her parental demands get in the way of Dexter's work.

Dexter's dad is happy-go-lucky and blissfully unaware of Dexter's extra-curricular pursuits. Dexter does his part to keep it that way.