Leon is one of the 6 Main Protagonists of Critter Fighters. He is a Chameleon who skin color changes after he turns invisible. His invisibility allows him to sneak passed enemies and searchlights.
Leon has a more tough attitude unlike his friends. He loves any color of grapes. It is show that Leon hates being cold.
After getting kicked out by the Big Gang, Leon teams up with the Small Gang to get revenge. Leon is the first to fight the first boss, Oddfrog who invaded his home. After defeating Oddfrog and the Big Gang, Leon is happy to be home with his brothers and sisters.