Dexter's Laboratory (1996–2003)
Dexter's dad can be seen
In "Imaginary Friend", one imaginary friend Bubbles conjures up to battle Patches is Koosalagoopagoop
As the Professor keeps switching bodies to get them right, Dexter appears as one of the many combinations
In the movie "Underfist: Halloween Bash" Billy is seen wearing the same white coat, black shoes and purple gloves that Dexter wears. He is also seen without his hat to show his red hair just like Dexter's
Dexter, Dee Dee, and Mandark are assimilated into the Delightful Reaper
points out the voice of Mandark
Eddie Deezen, an actor originally considered for voicing a character in Space Ace later voiced Mandark in this TV series.
Pinkie's line "Ooh, what does this bauble do?"
Clip shown as Paranormal Rob discusses intros.
Dexter & Dee Dee appear in the Once Upon a Toon skit.
Mentioned as one of Genndy Tartakovsky's previous works.
The Monkey is one of Fluttershy's animal friends in a fantasy sequence, and Dexter appears in a crossover wormhole that Rainbow Dash passes through.
Enter calls Johnny Test a rip-off of this series.
Discussed in the film
Image of the cartoon is shown.
"Is this a science lab or Dexter's murder room? You mixed up the Dexters, goddamn it!"
Dexter and Dee-Dee are listed as helped in Uncle Grandpa's list.
A TV series by Hotel Transylvania director Genndy Tartakovsky.
"...by looking like a mix between a Nascar driver and Dexter's mom."
At "The Grampies" short, Dexter and Dee Dee are seen in the audience.
One of the kids is watching TV.
End credits feature a 'courtesy of Cartoon Network' acknowledgement for use of this show
Henry watches this in the lab.
Hewy recognizes Mandark's voice in "The Polar Express," footage compared
Intro clip shown during introduction.
TV series is talked about, clips shown.
Number 6 in the top 10 Hanna-Barbera franchises.
Dexter and Monkey are playable characters. Deedee, Mandark, Major Glory, and Valhallen appear as assists.
"You do know that the science you've been listening to in Dexter's Lab is not real science don't you."
When thinking of ideas for episodes to submit to the tv show writing contest, the Brain starts to describe his and we see a cut-away sequence spoofing Dexter's Laboratory.
Paradox parodies Mandark and has the same laugh.
Dexter fights Stewie Griffin from Family Guy. Also, Dee Dee appears.
Dee Dee appears as one of Ms. Frizzle's students