Build your own Mandark Costume

Susan Astronomanov, better known as Mandark, is Dexter's primary rival and later enemy in the animated series Dexter's Laboratory. He is determined to prove himself as the superior genius by destroying Dexter and his laboratory. Voiced by Eddie Deezen, Mandark is portrayed as an evil boy genius with a desire to rule the world and a deep hatred for Dexter. Despite his evil intentions, Mandark is also depicted as being deeply in love with Dee Dee, Dexter's sister. His feelings for her are portrayed as obsessive, with his love for her enduring throughout the series even as he becomes more evil. Mandark's love for Dee Dee remains a constant in his otherwise dark and villainous personality, ultimately leading to his own defeat in the future. Throughout the series, Mandark becomes increasingly driven by a desire to overpower Dexter and proves himself as the superior boy genius. However, his efforts are continually thwarted by Dexter, often resulting in his own failure. His character evolves over time, with his evil nature and gothic motif developing as a result of his constant failures and growing hatred for Dexter. Despite his schemes and dark desires, Mandark's intense love for Dee Dee remains a prominent aspect of his personality. This unwavering love for her becomes a defining trait, even as he becomes a supervillain with a desire to rule the planet.