Izabeth Killman is the Main Antagonist of the Nickelodeon Animated Television Series Bunsen Is A Beast, She Is Voiced by Kari Wahlgren, Who Also Voiced Tayuya in Naruto, Charmaster in Ben 10, Sylvia in Family Guy, Patricia in American Dad, Tiggly in Futurama, Shannon Boxman In O.K .K.O, Lets Be Heroes and Star Sapphire In DC Superhero Girls (2015 English Web Series).