After watching a horror film, Dexter and his father become easily frightened.

In need of an assistant to operate his latest invention, Dexter performs a brain transplant on Dee Dee to make her smart enough to fulfill the role. With her new brain, Dee Dee proves to be more intelligent than Dexter.

Dee Dee’s new dance moves annoy Dexter to no end.

Dexter tries to turn himself into a superhero, but gives up after every power he tries backfires.

When his family is suffering from the flu, Dexter tries his best to not acquire the illness, but his efforts are thwarted by a sick Dee Dee’s presence in his lab.

Dexter studies the potato, and when he is fascinated by its power to light up a light bulb, he tries to use it as an energy source.

Dexter invents a belt whose wearer can do anything backwards, but mayhem occurs when Dee Dee gets hold of the belt’s directional switch.

Dexter tries to improve his eyesight by giving himself laser eye surgery, but goes too far in doing so.

Dee Dee’s imaginary friend Koosalagoopagoop (Dom DeLuise) suddenly comes to life and starts annoying Dexter.

Dee Dee wins a golden diskette, earning her a free trip to the laboratory of Professor Hawk (Tom Kenny), one of Dexter’s favorite scientists.

Dexter’s father sleepwalks into Dexter’s lab. Dexter discovers this, and now has to escort him out of the lab without waking him up, which proves more difficult than thought.

Again tired of being short, but mindful of his past failures, Dexter decides to make everyone shorter than himself.

Dexter’s parents and Dee Dee have their minds taken over by an alien life form that escaped from Dexter’s lab.

Dexter participates in the “Annual Soapbox Derby down Volcano Mountain”. This episode is a spoof of the popular Japanese manga/anime Speed Racer. In this episode, the movements and dialog deliveries of the characters are similar to anime. While Dexter parodies Speed Racer and his father parodies Pops Racer, Monkey parodies Chim-Chim and Dee Dee parodies […]

Dee Dee teaches Dexter how to live life her way instead of being lonely and purely focused on science.

Parodying The Pink Panther, Dexter is trying to paint his lab blue, but Dee Dee wants to make it pink.

Dexter creates a satellite to clean stains off of his clothes, but it goes horribly wrong when Mir space station hits the satellite that Dexter created and the satellite becomes damaged, causing the fabric beneath each stain to be eliminated as well.

When Dexter’s glasses break, he creates a new fad (wearing broken glasses) and becomes extremely popular at his school.

Dexter and his father enter a golf tournament, but Dexter’s father proves inept at the sport.

When Dee Dee eats a contaminated apple, she turns into a monster every time when she tells Dexter what to do.

Mandark gets in touch with nature.

After Dee Dee declares that she can beat Dexter in any game, Dexter challenges her to a series of games in his lab, though he prefers to win by cheating.

Dexter is forced to take Dee Dee to the zoo. There, she ends up trying to save an ostrich with disastrous results. Dee Dee and the ostrich switches their places.

Dee Dee goes and plays in her own “lab” after being kicked out of Dexter’s.