AIRS (Anti-Insurgent Ray Sky) is a robo and a member of the Ray Series that appears in Custom Robo GX and Custom Robo Arena. It is a Normal Style robo in GX and an Other Style robo in Arena. It was developed by Eiji, who uses it in the Corocoro Cup. Stark also uses it in Arena once certain conditions are met. As its full name suggests, it is a Military Grade Ray Sky robo.