Kanoya is aggressive and brutal, as he used violent methods to attain votes, and his revenge against Medaka was simply to attack her with as many armed men as possible at once. He is quite charismatic, as he was able to gather up a large number of students to help him with his plan. He is however a poor judge of character; his misinterpretation of Zenkichi's loyalties led to his downfall.
(Source: Medaka Box Wiki)
Vova
