Assassination Classroom: Irina Jelavic

Irina is a professional hitwoman with a Serbian accent who is hired to kill Korosensei by becoming a part-time foreign language teacher in class 3-E. She uses her charms to seduce Korosensei, making him at first obey whatever she asks. However, her first assassination attempt was foiled when Korosensei was able to suppress her three hired mercenaries attacks. This ended in her humiliation in front of all the students and she swore revenge. She teaches the students how to seduce people from other countries, so that with this method, they can learn foreign languages, and usually would punish male students who failed answering her questions during her lesson by kissing them until they pass out from being overwhelmed. Much to her dismay, she is nicknamed "Professor Bitch" by her students.