Former child star Molly Ringwald is helping to revive beloved children's cartoon character Rainbow Brite by signing up to voice main antagonist The Dark Princess. The actress joins Hannah Montana's Emily Osment as the titular character on the revamped series, about a young girl with magical powers who strives to save Rainbowland from evil forces. The revamped show will begin streaming on online service Feeln next month (Nov14), 30 years after the original Tv series premiered.