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Susan "Mandark" Astronomanov is the main antagonist in Dexter's Laboratory. He is Dexter's rival and later mortal nemesis who often seeks to destroy both Dexter and his lab to prove once and for all that he is the superior genius.
Mandark Astronomonov
Maya (Craig of the Creek)'s Friend Group
for Maya (Craig of the Creek)'s Friend Group in Fictional Character Friend Groups
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