Dexter is a Boy Genius Who has a secret lab in his room his Mom and Dad don't now about it, but his older sister Dee Dee Does and they go on wacky (yet Sci-fi) Capers Written by
He skips grades. She just skips.
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Did You Know?
Season 3 episodes are stories from the Dexter's Laboratory comic book series. See more
In the episode where Dexter is learning piano, the professor says they'll start on C, but they clearly start on F. See more
My name is Mandark and I am Dexter's rival. He and I have been competing in science and other things for years and this race is just one more of those things where we try to beat each other, except I try to win by being sneaky and bad! My plan this time is to sabotage the Mark 5, so it doesn'twork as good as it should, then when Dexter is racing he'll most likely crash up, leaving room for me to win!
After the end credits of season one they show the Cartoon Network logo and Dee-dee is dancing but then Dexter in a robot suit busts through the logo and looks to his left and right. See more
Featured in Eureka: E=MC...?