Dr. Light is a powerful Mad Scientist who appears in several episodes of Teen Titans, once more a comical foe, but still not one to be taken lightly. His archenemy in this version is Raven, who regularly trounces him with the darkness she contains, and who on occasion can defeat him just by showing up and glaring, so searing are the memories of his beat-downs. His biggest scheme involved the young hero Kole, who could become living crystal and who Light wanted to use as an amplifier. He still lost. His final appearance was at the end of Titans Together, the show's near-finale. Uninvolved with the schemes of The Brain, he was seen robbing a bank. With both the regular team and over twenty reserve Titans on hand, Raven predicted that Light would freak out as never before.
Doctor Light is a villain who likes to talk, and he considers himself the most accomplished, clever and mightiest bad guy around. He is always ready to prove his wit by teasing his opponents with idioms or puns relating to light. However, he usually fails to live up to his boasts, mostly because of his inherent overconfidence and a sheer lack of common sense. He is also scared by Raven since Nevermore. Doctor Light could somehow be afraid of bats as seen in Birthmark.
Light wants to be an evil threat, but doesn't have the cruel nature of one. At that, he's nothing but a petty criminal. He's powerful enough to take all of the Teen Titans with ease, however, his fear of the dark is the only thing that leads him to fail.