Rainbow Sentai Robin (1966)
Rainbow Sentai Robin is a classic Japanese anime series created by Shotaro Ishinomori, airing in 1966. It follows Robin, a young boy with mysterious origins, who leads the "Rainbow Sentai" team to protect Earth from alien invaders. The series is notable for being one of the first anime to feature a "sentai" (task force) concept, later influencing the Super Sentai franchise.