"The Hornet is one of the two overarching antagonist of the 2022 action comedy film Bullet Train, based on Kōtarō Isaka's 2010 dark comedic thriller novel Maria Beetle.
She is an assassin known for her usage of a snake poison, hired by the White Death to infiltrate into a bullet train, kill his son and steal his briefcase. The Hornet was also responsible for the death of the Wolf's wife, leading him to go into the train to find her."