male
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
11/12
for 11/12 in Sorting Characters by Possible Age
Suggested by dynastiprimosfan
We are sorting fictional characters by ages that aren’t explicitly shown or are according to me. It could be according to you too!
