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“Ooh! What does this button do?” —Dee Dee Dee Dee is a main character and the secondary protagonist in the series, Dexter's Laboratory. She is Dexter's older sister, who is mostly seen destroying or ruining Dexter's lab in various ways. The daily events surrounding Dee Dee's life mainly revolve...
Deidre Deanna "Dee Dee" McPherson is the deuteragonist of the Dexter's Laboratory series. She is Dexter's extremely ditzy and simple-minded big sister. Dexter often finds her very annoying, to the point he deems her as his "stupid sister." She is voiced by Allison Moore in seasons one and three...
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Who is Dee Dee in Dexter's laboratory?
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Dexter is at constant odds with his older and more extroverted sister Dee Dee, who always gains access to the lab and inadvertently foils his experiments. Dexter has a bitter rivalry with his neighbor and classmate Mandark, a nefarious boy-genius who attempts to undermine Dexter at every opportunity.