Masao Kobayashi (小林 政男, Kobayashi Masao) is a fictional character in Kunio-kun series. Coming from an upper-class background, he is a leader of the "Four Devas", a group of some of the most feared fighters from Reihou Academy under Onizuka in Downtown Nekketsu Monogatari.
- In River City Ransom, Kobayashi was name Thor, a leader of the "Zombies".
- In Crash 'n the Boys: Street Challenge, Kobayashi was called Worthington "Monty" Montgomery, a member of Team Lincoln High School.
- His name is spelled Kobayasi (no "h") in some games, including River City Melee: Battle Royal Special.