Rainbow Rangers Season Three Set for Nick Jr. Chelsea Regan September 22, 2020 Top Stories Nickelodeon’s Nick Jr. channel in the U.S. is slated to roll out all-new episodes of Genius Brands International’s Rainbow Rangers series. The content you are trying to access is only available to members. Log In Register Genius Brands International Nick Jr. Nickelodeon Rainbow Rangers 2020-09-22 Chelsea Regan Share