Ellen.

Ellen is a powerful girl, she is a commander of trillions pathogens, bacterias, fungi, viruses and parasites and use it to kill people, you are a superhero, you prevent her attacks, you control the Immune system army, can you her huge massive army? she kills people by going inside someones body while leading an army of pathogens, you get an alert if she trys to infect and kill someone, currently she killed 33.9K People.