Chase Mashin, known simply as Mashin Chaser, is a significant character in the tokusatsu series Kamen Rider Drive. Initially introduced as a cold and relentless enforcer for the Roidmudes, he hunts down those who betray his kind. Over the course of the series, Chase begins to question his allegiance, eventually developing a sense of justice and becoming a Kamen Rider ally. His journey from antagonist to hero is a key part of the show's emotional core.