The Friends of the Ood were an organisation determined to liberate the Ood from slavery (TV: The Impossible Planet) and prove Ood Operations was lying to the public about the nature of their slaves.
Dr Ryder was a member of Friends of the Ood. It took him ten years, but he freed the Ood Brain long enough for it to communicate with the Ood on the Ood-Sphere. When he was outed to Klineman Halpen, Halpen tossed him into the Ood Brain. He died from suffocation. Other pro-Ood supporters included the Tenth Doctor and Donna Noble, who saved the Ood from corporate slavery and were to be remembered by them in song. (TV: Planet of the Ood)