Metron (메트론) is modeled after a subway train. Frequently announcing things in a way you would expect a subway train to announce notices; Public Service Announcements. Has a strong personality that focuses on respect, timeliness, order and responsibility. Despite sounding and behaving more “robotic” than his fellow Athlons, Metron still has a zany personality and can be competitive. He's the strongest of the trio and comes out of his shell when he's working out or engaged in battle. 
- Metron's theme music is HardRock Stuff.