| "Dimwit Dexter" | Premiere Order "DeeDeemensional" | "Dial M for Monkey: Magmanamus" | 
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| "Dial M for Monkey: Simion" | Production Order "DeeDeemensional" | "Dial M for Monkey: Magmanamus" |
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| DeeDeemensional | |
| Season 1, Episode 1a | |
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| Air date | April 27, 1996 (TNT) April 28, 1996 (TBS/Cartoon Network) |
| Production number | 102a |
| Written by | Todd Fredericksen (Background Design) Martin Ansolabehere (Background color stylist) |
| Storyboard by | Rob Renzetti |
| Directed by | Rob Renzetti & Genndy Tartakovsky |
DeeDeemensional is the first episode in season one of Dexter's Laboratory, which first aired on April 28, 1996, although it tends to get mixed up with "Dexter's Rival" because this episode was actually the first episode to air on TV, even though "Dexter's Rival" was the first episode to be produced.
In this episode, Dexter has Dee Dee go back in time to tell himself not to open a passage. However, Past Dexter refuses to accept the message, and chaos ensues when Future Dee Dee meets Past Dee Dee. The episode name is a combination of the word "dimensional" and Dee Dee.
Plot
After a monster comes out of an inter-dimensional doorway that Dexter opens, he quickly writes a note that he gives to Dee Dee, instructing her to go back to the past and give him the note before he opens the passage. Dee Dee turns on the time machine and stands next to it, only for Dexter to tell her she needs to be inside the machine. Dexter in the past doesn't believe Dee Dee, thus he has to do whatever she and Past Dee Dee tells him in order to obtain the message from the future.
Characters
- Dexter
- Dee Dee
- Inter-Dimensional Monster (First appearance)
Trivia
- This is the first aired episode to air on Cartoon Network.
Cultural References
- The inter-dimensional doorway is a parody on the Stargate from the television series "Stargate SG-1."
- The title of this episode is a pun on "Dimensional."
Goofs/Errors
- The words on the note did not match what Dexter was reading.
Production Notes
- According to the credits, this episode along with "Dial M for Monkey: Magmanamus" and "Maternal Combat" were produced in the same year of 1996.
Airing
- This episode was the second produced episode of the series, but it aired first because Cartoon Network often airs episodes out of production order, becoming the series premiere. "Dexter's Rival" was meant to be the series premiere but was held off to the third episode.
- This episode is also aired on April 27, 1996 on TNT as a special preview.
